Yet more Goldfinches caught today - 15 new ones and 6 retraps. This October 102 new Goldfinches have been ringed. Only 17% of 124 caught have been retrapped indicating that they are moving through whereas 74% of the Great Tits caught have been retraps indicating that they are mostly resident ones.
Some UK goldfinches get together in flocks and roam around for food in winter but there is a steady food source at the moment on the reserve as there are several feeders so you might expect a higher rate of retraps as there is no need to wander too far for food. The new birds might be those that migrate southwards and notice a core of Goldfinches that are heading to a food source and follow them in. I haven't looked up where Heysham Goldfinches sometimes end up in winter but I've caught a couple in the Lune Valley that had been in Buckinghamshire and Warwickshire in late autumn. Some Goldfinches go as far south as Spain and Portugal.
Today's list:
Woodpigeon 1 new
Coal Tit 1 new
Blue Tit 3 new, 3 retraps
Great Tit 1 new, 6 retraps
Chiffchaff 4 new
Goldcrest 0 new, 1 retrap
Dunnock 1 new
Greenfinch 9 new
Goldfinch 15 new, 6 retraps
The Chiffchaffs keep coming through and there have been NO retraps during September and October. Here's a photo of one of today's Chiffchaffs.
You can see how small it is compared to my fingers and it weighed 7.2 grams which is roughly the same as two one pence coins. Amazing to think how some of these migrate to Southern Europe or even North Africa in the winter, although some stay in the the south of the UK now that winters are milder.
Fieldfare |
Four Eider flying north, another on the sea below them |
Male Red-breasted Merganser, showing off his red breast |
Mainly individuals feeding |
But these two were together |