Trumpeter Swan x Tundra Swan (Whistling Swan)

Trumpeter Swan x Tundra Swan (Whistling Swan) hybrid, Burlington, Skagit County (Washington, USA), 5th December 2009 - copyright Steve Mlodinow

(photo ID: 2209)

Here is another of Steve's hybrid records that could very easily have gone undetected were it not for a sharp pair of eyes.  Steve writes:

"This bird had a bill more like a Trumpeter Swan, was intermediate in size between two species, had more yellow on bill than Trumpeter Swan (which can have a dash of pallid yellow in lores), and displayed like a Trumpeter Swan. It was refound a couple weeks later and was paired with a Trumpeter Swan."

Trumpeter Swan x Tundra Swan (Whistling Swan) hybrid (same bird as in photo ID 2209 above), Burlington, Skagit County (Washington, USA), 5th December 2009 - copyright Steve Mlodinow

(photo IDs: 2207-2208)

Trumpeter Swan Cygnus buccinator
Tundra Swan Cygnus columbianus
Whistling Swan Cygnus columbianus columbianus