Trumpeter Swans, San Joaquin Co.
- Trumpeter Swans, adult and young, were also seen at Isenberg Crane Reserve on Woodbridge Road, San Joaquin Co. on Friday, 11/23/12
Mark J. Rauzon
900 Fallon St.
Oakland, CA 94607
[Non-text portions of this message have been removed]
Identifying Trumpeter Swans from Tundra Swans can be difficult,
especially if they are not side by side to see the differences. And,
attempting to identify swans from a photo is even more difficult.
But, I think the swans in your photos appear to be Tundras. They do not
have the thick necked, heavy head shape, long-billed profile or facial
feather pattern of a Trumpeter.
At the Central Vally Birds Yahoo Groups website page, I temporarily
inserted a useful photo of a Trumpeter near a Tundra Swan that shows the
size of the head, neck and bill differences.
Members of CVBirds can access photo albums on the web site which has a
Trumpeter Swan Album with more photos.
Perhaps others will chime in with opinions.
Granite Bay, CA
On 11/25/2012 10:26 PM, Mark Rauzon wrote:
> Trumpeter Swans, adult and young, were also seen at Isenberg Crane Reserve on Woodbridge Road, San Joaquin Co. on Friday, 11/23/12
> Mark J. Rauzon
> Laney College
> Geography Dept.
> 900 Fallon St.
> Oakland, CA 94607