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Ian HartleyParticipantSeptember 25, 2021 at 3:33 pmPost count: 61Ian HartleyParticipantSeptember 20, 2021 at 2:24 pmPost count: 61Ian HartleyParticipantSeptember 12, 2021 at 9:12 pmPost count: 61Ian HartleyParticipantSeptember 9, 2021 at 11:58 amPost count: 61
Little Grebe 25 on pool (a personal high count)
Cockersands lighthouse area
Mediterranean Gull 1 ad on water
Woodpigeon 275 on recently cut stubble field
Eider 1 between lighthouse and plover scar
Ian HartleyParticipantAugust 27, 2021 at 9:55 amPost count: 61
- This reply was modified 1 month, 1 week ago by Ian Hartley.
Thanks for the Avocet record John – 6V was ringed as a chick at Conder Green on 1/6/21, was at Leighton Moss on 14/7/21, then was photographed at Alkborough in north Lincolnshire on 31/7/21 and again on 13/8/21 and 18/8/21, and is now back – rather surprisingly. It was reported by someone else on 26th but it is useful to get a second observer to provide corroborative evidence, so thanks for posting.
Do you have an approximate time for your sighting please?
Ian HartleyParticipantAugust 16, 2021 at 8:04 pmPost count: 61Ian HartleyParticipantAugust 16, 2021 at 9:59 amPost count: 61
- This reply was modified 1 month, 3 weeks ago by Ian Hartley.
Great Black-backed Gulls are not particularly regular at Blea Tarn, but at the moment there are quite a few Lesser black-backed gull families there, presumably having left the inland fells where they breed, so I assume this GBBG pair and young are also from up there too. Guesswork really, but it makes most sense.
IanIan HartleyParticipantJuly 29, 2021 at 10:57 amPost count: 61
Note that the juvenile Common Terns reared on Conder Pool have got a red ring with a 3 digit number, so I’d be grateful for time and date of any that are recorded here or elsewhere. All records of birds reared at the pool are useful so that we have a better idea of when they leave. Common and Sandwich Terns ringed at Hodbarrow in Cumbria are already being seen on their way south.
Ian HartleyIan HartleyParticipantMarch 11, 2021 at 6:55 pmPost count: 61
To add to this for same area:
Colour ringed curlew seen on 8th March. Ringed as adult, 18/12/2017 at Llanrhystud, Ceredigion, Wales. Since then it has been recorded on three further occasions, all at Breydon water, Great Yarmouth, Norfolk: 22/08/2019, 24/11/2019 and 15/09/2020.
Neck collared Greylag Goose seen on 8th March. Ringed as adult, 25/6/2016 at Ambleside, Cumbria.
There is also a Canada Goose with a colour ring from Windermere but I haven’t had it close enough yet.
Finally, the remains of a predated kingfisher on 8th March, scattered on path near fishermen’s shelter.
Ian HartleyIan HartleyParticipantFebruary 18, 2021 at 10:39 pmPost count: 61Ian HartleyParticipantJanuary 12, 2021 at 10:22 amPost count: 61
The yellow colour in feathers is made from a component in the birds’ diet called carotenoids. Carotenoids are a family of chemicals made by plants which tend to be pigmented – so they form the orange in carrots and the red in tomatoes and other fruits. For birds, these cannot be made by physiological processes and need to be taken in as part of the diet. The intensity of the yellow is determined by a couple of factors at the time when the bird moults in autumn – first, the level of carotenoids in their diet and secondly their ability to use the carotenoids. Carotenoids serve several functions, as well as adding colour to the feathers, which might increase the chances of getting a mate, they are also used in immune system function and, for females, are deposited in egg yolks, which increases offspring quality. These various trade-offs can affect the plumage colour intensity. For example, if a bird is ill or has a large parasite load at the time of moulting, it might use up the carotenoids to bolster the immune system in defence of its health, so the feathers emerge rather paler than they would on a healthy bird or a bird that has access to a high quality food source. Some of these effects are also likely to be associated with age and sex.
This is a big field of research because of the link between individual quality and the plumage signal/marker. So if you want to read more, a google search on ‘carotenoid bird plumage’ will throw up plenty of results. Work by Geoff Hill and Kevin McGraw has been particularly important.
Ian HartleyIan HartleyParticipantDecember 4, 2020 at 8:07 amPost count: 61