Swan ID help/Weld

[The Nunn Guy]

HI All - Saw two swans at Loloff reservoir today at noon.  Can someone help with the ID?

Photos: Loloff Reservoir [Kersey] - Album View - Friends of the Pawnee National Grassland (friendsofthepawneegrassland.org)

Thanks!

Gary Lefko/Nunn

http://friendsofthepawneegrassland.org/

[Caleb A]

Hi Gary!

I believe that at least one of the birds (if not both) are Trumpeter Swans.

The birds are happy, and so am I

~Caleb Alons, Larimer County

[Lauren Hyde]

Based on what I am looking at in Sibley’s, my guess is that they are first summer tundra swans. Their backs are pretty white compared to their heads and necks, and they seem on the smaller side when compared to the ducks. But then again, this is just a guess!

Lauren Hyde

Keenesburg, Weld

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[J V Rudd]

When I saw these two species in Michigan a long time ago, I remember beak shape being the best way to tell the difference. Based on that I think both of these are Trumpeter Swans with the long, straight bills.

Van Rudd

Louisville, CO

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[Susan Rosine]

I saw them this afternoon. I entered them into eBird as Tundra Swans. They are not adults. It was a judgement call, mostly based on their head, including bill. We'll see if the reviewer confirms it or not. They just didn't seem quite big enough for Trumpeters. 

Susan Rosine

Brighton

[The Nunn Guy]

Hi all

Even on WhatBird.com forum swans are still identified as "Tundra/Trumpeter Swan" in the discussion thread.  I guess sometimes you just have to "walk away" not knowing :-)

Thanks

Thanks, Gary Lefko, Nunn

http://www.friendsofthepawneegrassland.org/

https://www.inaturalist.org/projects/birds-and-more-of-the-pawnee-national-grassland