Cygnus buccinator x CYGNUS cygnus Status: Accidental in winter Record: A single bird was observed and photographed at Gavin’s Point Dam, Cedar Co 7 Dec-1 Jan 2026 (Gregory Pavelka, eBird.org). Comments: The photographs show a yellow ill-defined but fairly extensive yellow patch on the bill of an otherwise Trumpeter-like adult swan (eBird Checklist – 17 … Continue reading Trumpeter Swan x Whooper Swan (hybrid)