Yes (qualified). Years and years ago, birders more experienced than I, identified a cuckoo as a hybrid. I was young and impressionable. I believed it then, but am not so sure now. Richard Guthrie New Baltimore, New York [log in to unmask] -----Original Message----- From: Vermont Birds [mailto:[log in to unmask]]On Behalf Of Gregory R. Askew Sent: Friday, June 10, 2005 9:20 AM To: [log in to unmask] Subject: [VTBIRD] Just wondering: Is there any evidence of the black-billed and yellow-billed cuckoo hybridizing? Saw two cuckoos today with Tom Barber at one location in his birding block, one which sounded like a yellow-billed and had some slight masking behind the eye but also had a buffy neck like a black-billed. The sighting was brief and the bird's beak was blocked from view by leaves, so we didn't have the opportunity to confirm that obvious field mark. Greg Burlington