Hi Ontbiders

With the influx of Goldeneyes during the past week along the Ottawa River I've 
been closely looking through the flocks for both male and female Barrow's 
Goldeneyes. Today, October 30th, I observed an orange-yellow billed female 
Common Goldeneye at Shirley's Bay. This is the 3rd individual that I have 
observed during the past week and I've had a few local birders report possible 
female Barrow's that have turned out to be Common Goldeneyes. The bill colour 
of female Barrow's is only an aid to the identification and it is not 
diagnostic. Most important is to look at the head shape. The head of the female 
Barrow's Goldeneye has an oval shape created by a steep forehead, flat crown 
and elongated hind neck feathers like a mane. The latter gives the appearance 
of a swept back crest, similar to the male Barrow's and female Hooded 
Merganser. The head shape of the Common Goldeneye lacks the " puffiness" of the 
female Barrow's. It has a rounded rather than flat crown and a sloping 
forehead. 

For more information see identification article below.


Recognizable Forms: Bill Colour and Identification of Female Barrow's Goldeneye

By Bruce Di Labio, Ron Pittaway and Peter Burke

Ontario Birds, Vol. 15, No. 2, Pages 81-85, 1997.


  
Good birding, Bruce Di Labio and Ron Pittaway

[EMAIL PROTECTED] & [EMAIL PROTECTED]


Di Labio Birding Website
Courses and Field Trips
http://www3.sympatico.ca/bruce.dilabio/

Bruce Di Labio
400 Donald B. Munro Drive
P.O. Box 538
Carp, Ontario, K0A1L0
Home (613) 839-4395 Cell (613) 715-2571
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