The month’s weather got off to a good start enabling the group to run six sessions.
The month's total of 204 captures was a site record; well ahead of the previous best of 161 in 2015. While there is much context to take into account I can say that it’s unusual to see tit flocks in large numbers at the site after Christmas.
Feather condition: we noted a couple of Great Tits with poor quality body feathers; possibly a result of an infestation (enough for us to sanitise after handling these individuals).
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Ageing House Sparrow
Svensson’s Identification Guide to European Passerines notes that House Sparrows cannot be aged after the completion of the young post-juvenile moult and the adult post-breeding moult. Laurent Demongin’s Identification Guide to Birds in the Hand notes plumage differences that can be used to age males. So we gave it a go…
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