Radipole Lake as most birders know, is and always has been a
good place to look for Bearded Tits. Working on the site I see them most days
though birders seem to, on a daily basis, have real trouble in finding this
species. So just to grip people off, here are a few Bearded Tits from yesterday
taken just a few yards from the visitor centre...
Ok, that was mean. Sorry. But here’s something interesting
about the two birds. Take a lot at the eye colour of the two males. Ones got an
orange tinge to it and the other is much greyer. Unlike lots of other
passerines, Bearded Tits go through a full post juvenile moult so trying to age
them in the autumn is impossible on plumage. But I think looking at these two
images it may still be possible in the autumn. The greyer bird most likely
being a bird hatched this year and the other being an adult. Only just noticed
this and not sure it’s something that’s 100% right every time but interesting
none the less.
There are plenty at Radipole at the moment, lots of which
are still thinking about leaving the site.
This group of 8 left the site
completely but over an hour later a flock of 8 fell out of the sky back into
the reedbed. I can only assume that it was the same flock who’d been for a tour
of Dorset before popping back to Radipole again. Not long after the 8 went for
their trip a pair also left. Half hour after the 8 arrived back presumably the
same pair also dropped back into the reeds. Fascinating behaviour!
Just a quick mention for the Med Gulls. They continue to
pile in and lots of ringed birds are now showing up. Got 11 ring number
yesterday including the Italian bird from a few days ago. Here’s a rubbish shot
of the fella.
This thought came to me after chatting to Dave Chown this
morning. The Italian bird showed up at the same time as the Serbian bird. I
wonder if they travelled up together given that they both come from the same
part of the world?? Thanks Dave for mentioning that earlier!
Probably worth reading the paper by John Wilson and Ian Hartley on the Leighton Moss Bearded Tits.
ReplyDelete"Changes in eye colour of juvenile Bearded Tits (Panurus biarmicus) and its use in determining breeding productivity", Wilson, John and Hartley, Ian R. (2007) Ibis, 149 (2). pp. 407-411
David Norman,
Merseyside RG
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