[TN-Bird] Re: Rutherford County swan
- From: Michael Todd <birder1@xxxxxxxxxxxxx>
- To: terrywitt@xxxxxxxxxxxxx, tn-bird <tn-bird@xxxxxxxxxxxxx>
- Date: Fri, 30 Dec 2011 04:58:32 -0800 (PST)
Terry,
From what I have seen, this is a reliable mark on older birds. This can be slow
to develop in young Tundra Swans, they can have quite pointed looking borders
during at least the first year of life. Not sure at what point this feature
fully develops; hard to see at times but pretty reliable I think on adults.
Mike Todd
McKenzie, TN
birder1@xxxxxxxxxxxxx
www.pbase.com/mctodd
________________________________
From: Terry Witt <terrywitt@xxxxxxxxxxxxx>
To: tn-bird <tn-bird@xxxxxxxxxxxxx>
Sent: Fri, December 30, 2011 5:52:29 AM
Subject: [TN-Bird] Rutherford County swan
One ID point that no one has mentioned that is noted in Sibley:
Trumpeter is supposed to have a V on the forehead of black from the bill while
Tundra has a semicircle. Both Chad and I could easily see this feature when
the
bird looked at us, and it is almost a straight line of black across the
forehead, no trace of a V.
What I do not know: how reliable is this fieldmark.
For interest - there are 2 prior records of Tundra Swan for Rutherford County,
but none for some time.
The woman who called me about the bird yesterday, told me last night that her
husband saw it first on Tuesday, so it has been there for at least 3 days
Cheers
Terry Witt
Murfreesboro Tn
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