[CT Birds] Question about the Blue-winged/Golden-winged hybirds
rmharvey at snet.net
Tue May 8 22:29:31 EDT 2012
Tom, I am anything but an expert, but I think that if you can get an answer from an expert it will be "We just don't know." The population of Golden-winged Warblers is scarce enough and hard enough to track. The hybrids are yet another degree less common, and I just can't imagine there is a whole lot of data on them. The only way I can think answers might be available is through banding data, but the percentage of bands which yield later tracking data is very small; a small return on a small population doesn't leave much to go on.
But it sure would be interesting if I were wrong!
Beacon Falls, CT
--- On Tue, 5/8/12, Tom de Boor <tomdb2 at aol.com> wrote:
> From: Tom de Boor <tomdb2 at aol.com>
> Subject: [CT Birds] Question about the Blue-winged/Golden-winged hybirds
> To: ctbirds at lists.ctbirding.org
> Date: Tuesday, May 8, 2012, 9:16 PM
> I have a question for the group about
> Brewster's and Lawrence's Warblers.
> I know CT is one of the best places to find these birds,
> but it seems like
> whenever one turns up, it's a one or two day wonder (I'm
> basing this only
> on the last few years--I didn't move to CT until 2007 and
> didn't find
> CTbirds until sometime after that). Do they end up settling
> further north
> (i.e. in Golden-winged, rather than Blue-winged country, or
> nearer the true border between the species, which seems to
> be steadily
> moving north)? Do they just wander around, unable to
> establish territories
> because of their mixed heritage? Other theories or
> knowledge about what's
> going on?
> Tom de Boor
> Branford, CT
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