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Boat-tailed Grackle: Odd mix of repeated "police whistles", pulsating buzzy phrases, and gurgling rattles. Atlantic Coast birds mix in occasional sharp, slightly husky kewp notes; comparable notes much higher and louder in Florida and Gulf Coast birds; Florida and Gulf birds also give repeated popping whistles, lacking in Atlantic birds.
Song:
Credits:All text copyright Michael O'Brien. All sounds copyright Macaulay Library. Image copyright Brian E. Small.