Cuckoos

The coo coo coo call of the Yellow-billed Cuckoo (June, NJ).












The knocker call (June, NJ).











This is the nocturnal flight call (3.37am, May, PA)

(2.32am, May, PA)

(3.46am, May, PA)



Two Yellow-billed Cuckoos in close interaction made these calls (May, NJ).










Black-billed Cuckoo song (May, PA).



Both cuckoos vocalize frequently during nocturnal migration. The Black-billed Cuckoo makes a unique swallowing sound (2.45am, May, PA).

(12.26am, May, PA)

(2.03am, May, PA)




(2.22am, mid-Sep, PA)

(3.13am, mid-Sep, PA)
https://app.box.com/shared/static/ue9q1x5k1phfq0pyy0qa.mp3 https://www.box.com/shared/static/ue9q1x5k1phfq0pyy0qa.mp3
Flight call by perched bird (May, NJ).

Perched bird singing and calling (June, MN)

The flight call is sometimes followed by a long series of calls (June, MN).