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2013 SOUTHEASTERN NATURALIST 12(1):61–72
Painted Bunting Abundance and Habitat Use in Florida
Michael F. Delany1,*, Bill Pranty2, and Richard A. Kiltie1
Abstract - A cooperative multi-state monitoring effort was initiated for Passerina ciris
(Painted Bunting) in 2008 because of a suspected decline in its eastern population. The
Florida component of this range-wide study was conducted during 3 consecutive breeding
seasons to obtain a better understanding of abundance and habitat use (vegetation
associations) than could be obtained from existing indices, to examine factors affecting
detectability, and to determine whether short-term trends could be assessed. Sample units
(three hundred two 0.01–27-km2 blocks) were allocated for Florida from which 22 were randomly
selected, within which 101 point-count survey stations were established. Point-count
surveys (n = 906) were conducted annually from 2008 to 2010, and vegetation characteristics
were quantified for each location. Abundances were estimated from the counts by an
N-mixture model for open populations. Estimated mean breeding density of male Painted
Buntings in Florida decreased from 12.4 males/km2 in 2008 to 9.8 males/km2 in 2010; these
densities are at the low end of the range previously reported for the eastern population. In
combination with an estimate of available habitat (1558 km2), the mean estimate of the
total number of males (maximum potential abundance) decreased from 19,319 in 2008 to
15,268 in 2010. Painted Bunting abundance in Florida was greater toward the northern end
of its range. Abundance was positively associated with the amount of maritime forest and
hammock at count points and negatively associated with the amount of planted pine. Conservation
of remaining maritime forest and hammock will be fundamental in maintaining
breeding populations of the Painted Bunting in Florida.
Passerina ciris L. (Painted Bunting) occurs in two geographically distinct
breeding populations: a western population occurring west of Florida south to
parts of Mexico, and an eastern population limited to coastal areas from North
Carolina to north Florida and extending inland in South Carolina and Georgia
(Lowther et al. 1999, Sykes and Holzman 2005). Breeding records in the Florida
panhandle (Ogden and Chapman 1967) may represent expansion of the western
population or an overlap of occurrence of both populations (Thompson 1991).
Because of suspected population declines, the Painted Bunting was listed on the
Partners in Flight Watch List as a species of special concern (Lowther et al. 1999)
and identified as a high priority for conservation action (Rich et al. 2004).
Although Breeding Bird Survey (BBS) data suggested that eastern Painted
Buntings had declined, Meyers (2011) noted that the birds had become too rare
in that part of their range for the BBS to serve as a useful source of populationtrend
estimates. He recommended that methods producing density estimates be
applied, especially those that account for incomplete detection. Mean estimates
1Florida Fish and Wildlife Conservation Commission, 1105 SW Williston Road, Gainesville,
FL 32601. 28515 Village Mill Row, Bayonet Point, FL 34667. *Corresponding
author - mike.delany@myFWC.com.
62 Southeastern Naturalist Vol. 12, No. 1
of 9–42 singing males/km2 (depending on habitat) from a distance-sampling approach
based on 582 count points made in 2003 throughout the eastern range of
the Painted Bunting (≈10% in NC, 38% in SC, 39% in GA, and 13% in FL) were
reported (Meyers 2011).
Although BBS data for eastern Painted Bunting population trends are inconclusive
at the state level, current analyses suggest the decline of the species may
be most severe in Florida (Sauer et al. 2011; see especially http://www.mbr-pwrc.
usgs.gov/cgi-bin/atlasa09.pl?06010&1&09). Such a decline might reflect landuse
changes in the species’ pericoastal habitats, which are more pronounced in
Florida than in other states of the bird’s eastern range.
Here we report results of a multi-year study designed to assess breedingseason
abundance and habitat associations for the Painted Bunting in peninsular
Florida. We used an alternative to distance sampling for estimating detection
probability based on repeat visits to a site, and applied a new technique for estimating
inter-year change in abundance from such data (Dail and Madsen 2011).
We performed this study as participants in the Working Group for the Eastern
Painted Bunting. The cooperative multi-state monitoring effort was organized
by the Georgia Department of Natural Resources and the US Geological Survey
Patuxent Wildlife Research Center in 2001, with representatives from Florida,
North Carolina, South Carolina, and the US Fish and Wildlife Service.
A grid of potential sample blocks (0.05°, 27 km2) was overlaid on the
breeding range of Painted Buntings in Florida, as delineated by Sykes and Holzman
(2005). The exclusion of blocks containing >30% unsuitable urban land
cover and exclusion of unsuitable urban areas in the remaining blocks resulted
in a sample area of 5360 km2. The list of blocks was permuted by drawing
them at random without replacement, where selection probability was proportional
to block size (state boundaries and unsuitable land covers resulted in
blocks of irregular size). Blocks were visited in the order drawn to determine
whether survey points could be established. The range of the eastern Painted
Bunting in Florida was 11% of its range-wide occurrence (Sykes and Holzman
2005), requiring a survey sample size of 20 blocks. The sampling scheme was
developed by the Working Group for the Eastern Painted Bunting, with previous
survey results (Meyers 2011) used to estimate variance and determine
sampling effort based on a desired level of precision.
Proceeding in random block order, we identified the road intersection nearest
to the center of the sample block. This represented the first of 6 possible survey
points within the sample block. Successive roadside points were established at
500-m intervals in a random direction from the initial point. A point was included
in the survey if a 200-m radius surrounding the point contained ≥1% habitat suitable
for Painted Buntings and was accessible. For each established count point,
we recorded the coordinates using a hand-held GPS receiver. All habitats were
considered potential habitat for Painted Buntings except closed-canopy forest,
2013 M.F. Delany, B. Pranty, and R.A. Kiltie 63
paved or impervious surfaces, open water, mowed lawns without trees or shrubs,
and agricultural fields without shrubs or shrubby borders (i.e., unsuitable habitat).
If at least 3 count points could not be established, the block was rejected in
favor of the next one on the randomized list. This selection process allowed estimation
of the percentage of Painted Bunting habitat available, and the proportion
of the landscape that was excluded from the survey.
A total of 302 sample blocks (0.01–27-km2, depending upon the grid overlay)
was allocated for Florida from which 22 were selected (Fig. 1) and count points
(n = 101) established. In the attempt to establish 3–6 survey points within each
block, 21 blocks were rejected because of unsuitable habitat, 6 were rejected
because access was unavailable, and 1 was rejected because it was located in an
area we deemed to be unsafe. Within the 22 sample blocks accepted, 77 count
points were rejected because the 200-m radius contained <1% potential habitat
for Painted Buntings.
The Working Group for the Eastern Painted Bunting established the following
survey protocol for use across the 4-state survey effort. Standard point-count
surveys (Ralph et al. 1993) were restricted to an estimated fixed-radius (75-m)
circle from the count point. Visual and auditory observations were recorded during
a 5-minute interval at each count point. The annual survey period was from
1 May to 15 June (2008–2010). Counts were conducted in the 4.5-hour period
beginning 0.5 hour before official sunrise, and during the 3-hour period prior to
official sunset. Morning surveys (n = 663) were conducted from 0615 to 1048 hrs
and evening surveys (n = 243) were conducted from 1709 to 2009 hrs.
Counts were conducted in weather conducive to detecting (i.e., seeing or
hearing) Painted Buntings, and were not conducted during conditions of rain,
high wind velocities (>12 kph), and high ambient noise. The number, age, and
sex of Painted Buntings detected were recorded. The dataset included counts
of birds at all individual within-year surveys. The number of cars passing during
the time of observation and the estimated percent time of other disturbing
noise in 4 categories (none, low, medium, and high) were recorded. Cloud
cover, and wind speed (as 3-level ordinal variables) also were recorded. The
survey protocol required that counts be conducted at each point on 3 independent
occasions during each year’s survey period by the same observer,
and allowed repeated measures on the same day; the mean (with median,
maximum, and minimum) times between sequential pairs of site visits were
61.8 (11.2, 623.2, and 0.4) hr in 2008, 44.2 (10.5, 529.2, and 0.4) hr in 2009,
and 16.3 (0.9, 288.1, and 0.4) hr in 2010. Seven observers participated in
the study. Seventy-five percent of the site visits were made by one observer,
whereas 3–6% were made by each of the remaining six observers.
For the area within a 75-m radius around each point location, habitat was
assessed by visual estimates (in 10% increments) for each of the following
components: unsuitable habitat, maritime shrub, maritime forest and
hammock, open pine and pine hardwood, early successional forest, interior
shrub-scrub, riparian, agriculture, closed-canopy forest, and planted pine. For
convenience and following precedent of related previous studies, we used
64 Southeastern Naturalist Vol. 12, No. 1
habitat to refer to the ecological descriptions of the census points provided
by these 10 variables, although vegetation association may be a more suitable
term for their information (Hall et al. 1997).
Correlations of the habitat variables were addressed by principal components
analysis of the centered log-ratio covariance matrix after adding 0.01 to
the values so that logarithms could be taken. This approach takes into account
the non-independent nature of percent-composition variables, which must total
100% (Jackson 1997, Reyment and Jöreskog 1993) and transforms the decile
estimates to a more continuous scale. Varimax rotation (which maintains independence
of the axes) was performed to improve interpretability (Johnson and
Analyses were performed using package “unmarked”, version 0.9-7 (Fiske
and Chandler 2011, Fiske et al. 2012) for the R statistical environment, version
2.15.0 (R Development Core Team 2012). We applied Royle’s (2004)
maximum likelihood method for modeling abundance and detection probability
from spatially replicated point counts with Dail and Madsen’s (2011) extension
to estimate between-year survival and recruitment. In this “robust design”
approach, the model assumes that recruitment (births or immigration) and imperfect
survival (deaths or emigration) may occur in the study population at each
survey point between years but not between visits within years. Painted Bunting
abundance in each year at each survey point was estimated either as an overall
average (“intercept only”) or as a function of an intercept, of survey point latitude
(which was correlated with longitude), and of site scores on the 6 habitat factors
accounting for 90% of the among-site variance in the original habitat variables.
Either Poisson or negative binomial latent abundance distributions were assumed.
Detection probability was estimated either as an overall average or as a
function of an intercept and of 5 variables assessed at each survey visit: log(car
count + 0.1) (rescaled to mean 0 and SD = 1), noise level, sky cover, wind level,
and time of day (rescaled to mean 0 and SD = 1). Between-year recruitment and
survival were estimated as averages over the three years of the study. Thus, there
were eight models compared by assuming either Poisson or negative binomial
latent abundance distributions with the following four combinations of predictors:
intercept only for both abundance and detection probability, intercept only
for abundance and intercept plus 5 covariates for detection probability, intercept
plus 7 covariates for abundance and intercept only for detection probability, and
intercept plus 7 covariates for abundance and intercept plus 5 covariates for detection
probability. Relative goodness of fit was compared by AICc, and absolute
goodness of fit was evaluated by the parametric bootstrap test using the sum
of squared errors with 250 replicates (Kéry et al. 2005, MacKenzie and Bailey
2004). A likelihood-ratio test was also used to compare nested Poisson and negative
binomial models (Cameron and Trivedi 1998).
Recruitment, survival, and average detection probability were estimated by
backtransforming the appropriate model parameter estimates. Painted Bunting
2013 M.F. Delany, B. Pranty, and R.A. Kiltie 65
abundance in the total sample area was estimated for 2008 as the sum of the backtransformed
predicted abundances at the survey points. For 2009, the abundance
estimates of 2008 were multiplied by the survival estimate, and the recruitment
estimate was added (Dail and Madsen 2011). For 2010, the 2009 abundance
estimates were multiplied by survival and recruitment was added. Confidence
intervals for all estimates were based on a parametric bootstrap of the best model
with 1000 simulations. Density estimates per km2 were computed by dividing
the estimated total yearly abundance summed over the 100 count points and their
upper and lower 95% confidence limits by 1767 km2, the total assumed area of
the survey sites. Additional details of the modeling and estimation methods are
provided (Supplementary Appendix 1, available online at http://www.eaglehill.
us/SENAonline/suppl-files/s12-1-1058-Delany-s1, and, for BioOne subscribers,
The 906 point-count surveys detected Painted Buntings at 20 points within
8 sample units (Fig. 1). There were 134 observations of Painted Buntings (114
males, 4 females, and 16 of undetermined gender) during 3 years, with 8 of these
detections occurring outside the 75-m point-count sample radius. Most males
(n = 83; 73%) were detected auditorily; 19 (16%) were detected visually, and 12
(10%) were detected both auditorily and visually. No points were abandoned because
of non-detection of birds. After excluding 31 observations during 9 surveys
at a count point with a bird feeder, which could have biased results, only detections
of known males (n = 75) within the 75-m-radius sample area were included
in the analyses.
There was mild reduction of the habitat descriptor data through principal
components analysis. Six habitat factors were able to account for 90% of the
original variance before rotation. After rotation, scores on each factor were
strongly positively correlated with one original variable and moderately
negatively correlated with one or two other variables (Table 1). This result
Table 1. Loadings (correlations) of the original habitat variables with 6 factors after varimax rotation
for Painted Buntings in Florida, 2008–2010. Major contributors to each factor are in bold
underline, and lesser contributors with correlations ≥0.30 (an arbitrary distinction) are in bold.
Rotated factor loadings
Factor 1 Factor 2 Factor 3 Factor 4 Factor 5 Factor 6
% unsuitable habitat -0.33 -0.08 -0.22 -0.15 -0.13 0.88
% maritime shrub 0.04 0.98 -0.13 0.06 -0.11 -0.03
% maritime forest and hammock 0.96 0.02 -0.14 -0.03 -0.13 -0.16
% open pine -0.11 -0.10 -0.02 -0.01 0.99 0.07
% early succession forest -0.16 -0.38 -0.02 0.86 -0.30 0.01
% interior shrub-scrub 0.03 -0.13 0.03 -0.40 -0.13 -0.01
% riparian -0.03 -0.01 -0.05 -0.08 -0.07 -0.26
% agricultural -0.49 -0.37 -0.45 -0.37 -0.09 -0.49
% closed canopy 0.16 0.06 -0.03 0.28 -0.02 0.08
% planted pine -0.14 -0.15 0.96 -0.14 -0.03 -0.03
66 Southeastern Naturalist Vol. 12, No. 1
Figure 1. Centroids of 22 sample areas (randomly selected and verified 27 km2 blocks) for
Painted Bunting point count surveys in Florida, 2008–2010. + = blocks in which Painted
Buntings were detected. • = blocks surveyed but no Painted Buntings detected. The breeding
range of the Painted Bunting in Florida (Sykes and Holzman 2005) is shaded.
2013 M.F. Delany, B. Pranty, and R.A. Kiltie 67
suggested that the factors represented habitat contrasts. For example, on factor
1, highest scores would be for sites with highest maritime forest cover and
little unsuitable habitat and agricultural land; on factor 2, highest scores would
be for sites with high percentage maritime shrub cover and little early succession
or agricultural, etc. (see Table 1).
The best point-count model by AICc was one assuming a Poisson latent
abundance distribution with covariates for abundance and only an intercept as
predictor of detection probability (Table 2). Four models with no abundance
covariates immediately could be dismissed as implausible given their AICc
weights. Dispersion parameters for the remaining negative binomial models
(2 and 4) were not significantly different from 0 (z = 0.12, P = 0.91 for model 2; z =
0.-0.32, P = 0.75 for model 4), and likelihood-ratio tests indicated that neither was
significantly better than the corresponding Poisson model (model 1 vs. 2: χ2 = 0.00,
df = 1, P = 0.98; model 3 vs. 4: χ2 = 0.67, df = 1, P = 0.42). The negative binomial
models therefore appeared redundant to their corresponding Poisson models and
were not considered further. When comparison was made only between models 1
and 3, model 1’s AICc weight (0.86) fell slightly short of Burnham and Anderson’s
(2002) criterion (0.90) for acceptance as a single best model. However, none of the
detection probability covariate effects of model 3 differed from 0 at P ≤ 0.05 , and
abundance and density inferences from that model differed by ≤ 2% from those of
model 1. A parametric bootstrap test indicated good fit (P = 0.426) for model 1, so
this model was used for abundance and density estimates.
Parameter estimates and associated statistics for model 1 are presented in
Table 3. There was a significant positive association of abundance with latitude of
survey point and with habitat factor 1, which represented a contrast between maritime
forest and the combined class agriculture and unsuitable habitat (Table 1).
There was a marginally significant negative association between abundance and
habitat factor 3, the contrast between planted pine and agriculture.
Total abundance of Painted Buntings at the 100 survey points was estimated
to be 22.0 (95% CI = 12.0–33.1) in 2008; 19.3 (95% CI = 11.0–28.6) in 2009;
Table 2. Model comparisons by information criteria. For abundance covariates, “none” indicates
intercept only, “all” indicates intercept plus latitude rescaled to mean 0 and SD = 1 and scores
on 6 habitat PCA axes. For detection probability covariates, “none” indicates intercept only, and
“all” indicates intercept plus log(car count + 0.1) (rescaled to mean 0 and SD = 1), noise level,
sky cover, wind level, and time of survey within day (rescaled to mean 0 and SD = 1). K is the
number of model parameters.
Model Abundance Det. Prob. AICc Cumulative
# Distribution covariates covariates K AICc ΔAICc weight weight
1 Poisson All None 11 320 0.00 0.66 0.66
2 Negative binomial All None 12 323 2.60 0.18 0.84
3 Poisson All All 16 324 3.61 0.11 0.95
4 Negative binomial All All 17 326 5.87 0.04 0.99
5 Negative binomial None All 10 328 7.90 0.01 1.00
6 Negative binomial None None 5 332 11.87 0.00 1.00
7 Poisson None All 9 336 15.81 0.00 1.00
8 Poisson None None 4 340 19.90 0.00 1.00
68 Southeastern Naturalist Vol. 12, No. 1
and 17.3 (95% CI = 8.7–27.9) in 2010. Density estimates of Painted Buntings
implied by the abundance estimates were 12.4/km2 (95% CI = 6.8–18.7) in 2008;
10.9/km2 (95% CI = 6.1–16.2) in 2009; and 9.8/km2 (95% CI = 4.9–15.8) in 2010.
Detection probability was estimated to be 0.43 (95% CI = 0.31–0.54). The estimated
recruitment at each site between years was 0.03 (95% CI = 0.0–0.07.). The
estimated survival probability between years was 0.76 (95% CI = 0.55–0.95).
Our mean estimates of the breeding density of male Painted Buntings in
Florida are at the low end of the range previously reported for the subspecies.
Hamel (1992) reported range-wide breeding densities from 5.2 to 9.0 males per
40 ha (13–23/km2), depending on habitat conditions, with greater densities in
maritime forest than in mixed pine hardwood forest. Densities throughout the
breeding range estimated by Meyers (2011) ranged from 9 males per km2 in pine
plantations to 42 males per km2 in maritime shrub; the overall average (weighted
by habitat sample size) was about 23 males/km2.
Several factors might contribute to our relatively low average density estimates
and ostensibly declining population. One might be that the decline of the
Painted Bunting in Florida is continuing as suggested by the BBS data. Annual
mean estimates of abundance and density from our model suggest that the rate of
decline of Painted Buntings in Florida may be even more rapid than suggested
by the BBS over a longer time span. Continued monitoring will be needed to
confirm whether such a change is occurring. Somewhat low abundance and density
estimates also may be due to the method of survey-point determination. The
count points were chosen to represent random locations within the known range
of Painted Buntings in peninsular Florida where the birds could occur, but they
Table 3. Parameter estimates from Poisson open-population model for Painted Buntings in Florida,
2008–2010. Scaled abundance predictors were standardized to mean = 0, standard deviation = 1.
P (> |z|) indicates significance level of test that the parameter is 0.
Estimate SE z P (>|z|)
Abundance (log scale)
Intercept -4.084 1.285 -3.18 0.001
scale (latitude) 1.105 0.548 2.02 0.044
Habitat factor 1 1.129 0.446 2.53 0.011
Habitat factor 2 -0.135 0.492 -0.27 0.784
Habitat factor 3 -3.235 1.822 -1.78 0.076
Habitat factor 4 0.468 0.438 1.07 0.285
Habitat factor 5 -0.352 0.481 -0.73 0.465
Habitat factor 6 -0.257 0.297 -0.87 0.386
Detection (logit scale)
Intercept -0.276 0.269 -1.03 0.305
Recruitment (log scale)
Intercept -3.641 0.535 -6.81 0.000
Survival (logit scale)
Intercept 1.148 0.521 2.2 0.028
2013 M.F. Delany, B. Pranty, and R.A. Kiltie 69
may differ from habitat representations used in previous studies. Our habitat
data were measured on fundamentally continuous scales that make our results
not directly comparable to those of other studies in which the goal was habitatspecific
inferences. More appropriate comparisons may be made by examining
densities predicted by our model at survey points representing the most favorable
measured extremes of the significant habitat covariates: The mean predicted
densities of males at the 10 survey points with greatest values for F1 (habitat
factor most highly correlated with maritime forest and hammock and positively
related to abundance) were 44.5 (2008), 33.8 (2009), and 25.7/km2 (2010). The
mean predicted densities of males at the 10 survey points with lowest values for
F3 (habitat factor most highly correlated with planted pine and negatively related
to abundance) were 13.6 (2008), 10.4 (2009), and 7.9/km2 (2010).
Another consideration may be that our density estimates do not take into
account any possible discrepancy between the assumed 100% detection rate
within the 75-m count radius and a realized effective detection radius (EDR).
Meyers (2011) obtained EDR = 57 m in undeveloped habitats and EDR= 70 m
over all habitat types. If EDR in our study were 57, the point density estimates
would have been 21.5 males/km2 (2008), 18.9 males/km2 (2009), and 16.9
males/km2 (2010); if EDR were 70, the estimates would have been 14.3 males/
km2, 12.6 males/km2, and 11.2 males/km2 respectively. These density estimates
for Florida would be closer to those reported for other areas (Hamel 1992,
Assuming that sample blocks and count points were representative of habitat
available in Florida, and applying proportions of suitability that we found in our
selection process (22 of 43 sample blocks and 101 of 178 count points, or about
29%), we estimate that there was 1558 km2 of potential habitat in the 5360-km2
sample area. Combining our mean estimates of Painted Bunting density and the
estimate of potential habitat indicates a total estimated population of 19,319
(2008) to 15,268 (2010) males, but corresponding confidence intervals are wide
(10,594–29,124 and 7634–24,616). This extrapolation of a state-wide population
estimate should be viewed as the maximum potential abundance. Although
our mean estimates of density seem low compared with previous estimates from
other parts of the eastern range, the mean total population estimates extrapolated
above are greater than an estimate by Partners in Flight of 7479 Painted Buntings
in Florida (based on BBS data and Rosenberg and Blancher’s  corrections;
Consistent with previous reports (Cox 1996, Robertson and Woolfenden
1992, Stevenson and Anderson 1994, Sykes and Holzman 2005), Painted Buntings
in Florida were less abundant in the southern portion of their breeding range
and used a variety of breeding habitats. Birds were found in agricultural fields
bordered by mature oaks, overgrown fields, maritime shrub, citrus groves, and
maritime forest. Painted Bunting abundance was greater in maritime forest than
in other habitat types, with a weaker association between abundance and maritime
shrub. In contrast, Meyers (2011) found greater densities of Painted Buntings in
maritime shrub. Maritime forests and hammocks adjacent to salt marsh appeared
70 Southeastern Naturalist Vol. 12, No. 1
to be an important structural feature in habitat selection by Painted Buntings in
Florida. Similarly, Lanyon and Thompson (1986) found that eastern Painted Buntings
in coastal Georgia preferred “higher quality” territory locations at the edge
of salt marshes to sites in interior forested areas. The edge of forests and open
areas rather than interior forest locations also appeared to be important breeding
habitat for Painted Buntings in eastern Texas (Dickson et al. 1995, Kopachena
and Crist 2000) and Oklahoma (Parmelee 1959). Painted Buntings are usually
absent from forests that have little understory (Lowther et al. 1999), and our
results suggest a negative association in abundance in pine plantations and open
pine habitat. However, habitat affinities of Painted Buntings presented here may
be biased because roadside sampling of avian populations may not adequately
represent available habitat (Betts et al. 2007).
Conservation and management of remaining maritime forest will be fundamental
in the conservation of breeding Painted Buntings in Florida. Development
of these habitats reduces density as much as 50% (Meyers 201 1). Because maritime
shrub is maintained by natural forces that create open areas, Springborn and
Meyers (2005) did not recommend prescribed fire to manage this plant community.
Mature maritime forests and hammocks with natural openings also require
little management for Painted Buntings. Local extirpations may be related to
the size and isolation of habitat fragments (Fahrig and Merriam 1994), so spatial
relationships of extant populations and areas of potential habitat should be
considered in management plans designed to maintain connectivity. Significant
populations of Painted Buntings exist on public lands in Florida. Annual pointcount
surveys should be conducted at these locations to monitor populations and
evaluate land-management actions. Based on our model estimates, future surveys
and analysis should incorporate both site and observation covariates.
H. Alboher, G. Clark, P. Scalco, and M. Wooley (Florida Department of Environmental
Protection) provided administrative support for work at Fort Clinch State Park. J.
Ellenberger (Florida Fish and Wildlife Conservation Commission, [FWC]) assisted with
access to Guana River Wildlife Management Area. J. Reister, with Ponte Vedra Beach
Resorts, allowed access to private property. R. Clark, A. Kropp, K. Miller, A. Mitchell,
J. Rodgers, Jr., and S. Schwikert assisted with surveys. K. Rogers helped with data
management. Eastern Painted Bunting Working Group members D. Allen, L. Barnhill,
D. Demarest, C. Depkin, J. Gerwin, L. Glover, M. Johns, T. Jones, K. Lulce, C. Moore,
R. Mordecai, J. Meyers, B. Peterjohn, J. Rotenberg, J. Stanton, P. Sykes, Jr., B. Winn,
and M. Wimer contributed to the design of this study. We thank R. Chandler and A. Royle
for helpful advice on statistical methods. R. Butryn provided the figure. This project was
supported by FWC targeted grant award NG07-101 administered by S. Cumberbatch.
B. Crowder, K. Miller, C. Moore, J. Meyers, T. O’Meara, and J. Rodgers, Jr., and anonymous
reviewers commented on previous drafts of this paper.
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