In contrast Tennessee warblers have short, mostly square tails with no markings and American redstarts have long, square tails with orange or red tail spots very close to the body.

Source: https://www.lakesideleader.com/bird-report-tail-shape-and-pattern-important-clues-in-bird-id-species/

This is one of the busiest times of year for palm warblers, yellow-rumped warblers, white-throated sparrows and other birds passing through Chicago on their way south for the winter.

Source: https://chicago.suntimes.com/2023/10/6/23906778/birds-killed-migration-collision-mccormick-place-lakeside-center

This is one of the busiest times of year for palm warblers, yellow-rumped warblers, white-throated sparrows and other birds passing through Chicago on their way south for the winter.

Source: https://chicago.suntimes.com/2023/10/6/23906778/birds-killed-migration-collision-mccormick-place-lakeside-center