Thursday, 30 August 2012

[cobirds] Aberrant Canada Goose - Stearns Lake, S Boulder County

Hi,
 
Twice this week I've seen an odd looking Canada Goose hanging with other regular-looking geese at the small pond across 104th St from Stearns Lake.
 
At first I thought it was a leucistic bird, but on closer inspection it better fits a hybrid:
- Orange bill and legs
- Extensive white on face, from base of bill to back of cheek (perhaps not reaching the crown, but I wasn't able to confirm this)
- Neck as in Canada G.
- Chest particularly dark. Darker than sides and back
- Large bird, slightly larger than the rest of the flock.
 
A quick image search revealed a similar looking bird described as a Greylag x Canada (http://www.flickr.com/photos/93372558@N00/71244337/). Now, I've not seen domestic geese around the area (but the pond is in a farm and definitely a possibility) and the rest of the birds seem wild.
 
If you want to look for this bird, I've seen them at said location between 5:30 - 6:30pm both days.
 
Happy Labor Day birding,
Luis (Beto) Matheus
Erie, CO

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