Chestnut-sided warbler

Rondeau Provincial Park, Ontario, Canada, Aug 23, 2021.


Fall migration is picking up. We had 7 species of warbler, including this chestnut-sided warbler in the yard on Monday.
Setophaga pensylvanica
On the wintering grounds in Central America the Chestnut-sided Warbler joins in mixed-species foraging flocks with the resident antwrens and tropical warblers. Individual warblers return to the same areas year after year, joining back up with the same foraging flock it associated with the year before.
source- Cornell Lab of Ornithology.

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