Yellow-rumped warbler, Rondeau Provincial Park, August 1, 2023.
This is the earliest we recall having a yellow-rump at the water.
Setophaga coronata.
When Yellow-rumped Warblers find themselves foraging with other warbler species, they typically let Palm, Magnolia and Black-throated Green warblers do as they wish, but they assert themselves over Pine and Blackburnian warblers.
source -Cornell Lab of Ornithology
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