With the weather synopsis showing rain for Ringer’s Saturday, Friday morning became the now or never day. So off I went to Rawcliffe Moss hoping to finish about 1030 before the horse flies warm up and become hungry for blood.
Notable happenings this morning - the number of Goldfinches about, the continuing lack of juvenile Willow Warblers, recaptures dwindling as the breeding population thins out, and a Tawny Owl escaping from a mist net for the second time in as many weeks. The owl landed in the far end of a 60ft net as I was taking a Whitethroat from the opposite end. It looked towards me then flapped out and away before I could get anywhere near it. The nets aren’t really designed to hold large owls, but the day was early and I saw a second Tawny Owl later – read on!
The few nets kept me occupied with a decent catch of 29 birds, 27 new and just 2 recaptures, a Goldfinch and a moulting Willow Warbler. New birds: 17 Goldfinch, 5 Whitethroat 2 Willow Warblers – both moulting adults, and 1 each of Sedge Warbler, Dunnock and Chaffinch.
Although moulting Willow Warblers look a bit messy this time of year with a mix of feathers old, new, worn, or missing, it is instructive to look closely at any emerging feathers. The adult below is in the process of renewing all flight feathers, with the tail colouration and shape a useful diagnostic feature with which to separate adults from juveniles later in the season when both newly moulted adults and fresh juveniles look very similar.
The Goldfinch bills now betray the fact they extract seed from plants, but whether the black deposit is from our Niger seed I don’t know.
Other birds seen this morning: 15 Tree Sparrow, 2 Yellowhammer, 2 Corn Bunting, 4 Skylark, 2 Buzzard, 45 Goldfinch, 120+ Lapwings on newly cut fields, and 2 Tawny Owls. Yes, the other Tawny I found on my way home, and that leaf just wouldn’t blow out of the way, but it rather made up for the earlier miss. Maybe I'll do a bit of gardening, prune that little branch and remove the overhead leaves just in case it decides to sit there another day?