A Male Kirtland’s Warbler Observed Feeding Yellow-rumped Warbler Nestlings

Carly N. Lapin^1,*, Nicholas M. Anich², Laura L. Jaskiewicz¹, Amber J. DeValk^1,3, and Michele P. Woodford⁴

¹Wisconsin Department of Natural Resources, Bureau of Natural Heritage Conservation, Rhinelander, WI 54501. ²Wisconsin Department of Natural Resources, Bureau of Natural Heritage Conservation, Ashland, WI 54806. ³University of Wisconsin - Stevens Point, College of Natural Resources, Stevens Point, WI 54481. ⁴Wisconsin Department of Natural Resources, Bureau of Wildlife Management, Woodruff, WI 54568. *Corresponding author.

Northeastern Naturalist, Volume 29, Issue 1 (2022): N6–N8

Abstract
We report the observation of a male Setophaga kirtlandii (Kirtland’s Warbler) feeding nestlings in a Setophaga coronata (Yellow-rumped Warbler) nest in Vilas County, WI. To our knowledge, this is the first documented report of interspecific feeding in Kirtland’s Warbler, adding to the list of species known to have exhibited this behavior.

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