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Seen at Lake Los Carneros Park, Goleta, CA on 11/25/19

Thinking that this is a Tundra x Mute Swan hybrid. 

Didn't seem bothered by my close approach, got within 8 feet of it. Any help is appreciated.






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Looks like hundreds of reports in eBird of this as just swan sp., with assumptions it is hybrid.  I’m guessing they ruled out Whooper already.  

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Whooper swa is easily ruled out by the slightly different bill shape, the yellow on the bill being not bright enaugh and the pinkish patch towards the top of the bill.

I have seen the pinkish patch in mute x whooper, mute x trumpeter and mute x tundra.

Mute x whooper in average has less black on the bill

examples here:

Mute x Whooper swan variability

 mute x trumpeterer had more black to the base of the bill (at least those photos I have seen),

so I would agree it is most likely mute x tundra. But no 100% ID by me, sorry.

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