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Old Monday 9th October 2006, 23:20   #1
Terry O'Nolley
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Lightbulb Eared or Horned Grebe? (eclipse plumage, Lake Tahoe, NV)

Saw this grebe a long way off and couldn't tell if it was an Eared Grebe or a Horned Grebe.

The pics are quite small - the birds were a LONG way off (I shot these with a 300mm lens).

Anyone have an idea?


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Old Tuesday 10th October 2006, 00:05   #2
tf1044x
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Quote:
Originally Posted by Terry O'Nolley
Saw this grebe a long way off and couldn't tell if it was an Eared Grebe or a Horned Grebe.

The pics are quite small - the birds were a LONG way off (I shot these with a 300mm lens).

Anyone have an idea?
Looks to be Horned
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Old Tuesday 10th October 2006, 17:44   #3
Terry O'Nolley
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I was thinking Horned because the white neck looks so clean and sharply defined but I'm really not sure how variable the Eared Grebe's plumage can be.

(This reply is mainly a bump - I'd like to hear what others have to say)
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Old Tuesday 10th October 2006, 18:26   #4
James Lowther
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don't know the american names but for my money these are nigricollis, not auritus. At long range, or in poor photos, structure of the head is as good a pointer as any. These birds' crowns peak above or in front of the eye. In auritus the crown peaks at the back of the head
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Old Tuesday 10th October 2006, 19:30   #5
David Norgate
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Again difficult to be sure, but I would agree with nigricollis ie Eared Grebe. The heads look very round, as does the jizz of the body. Their is no hint of white in front of the eye which I would expect in Horned - which also look flatter headed and bodied.
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Old Tuesday 10th October 2006, 23:44   #6
cavan wood
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Quote:
Originally Posted by James Lowther
don't know the american names but for my money these are nigricollis, not auritus. At long range, or in poor photos, structure of the head is as good a pointer as any. These birds' crowns peak above or in front of the eye. In auritus the crown peaks at the back of the head
This thread has made me realize how absurd the north american names are for these two birds.

Podiceps means grebe
P. auritus means literally, eared grebe, but in NA we call it horned grebe
P. nigricollis means literally, black-necked grebe, but in NA we call it eared grebe

No wonder I always get these two mixed up.

Scott
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