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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. B

    Juvenile Herring Gull, Flamborough, England

    I photographed this bird today, 2 November. Still has juvenile scapulars. Because of this and the tertial pattern I reckon it's a nominate bird, but what do others think? Brett
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    Red-tailed Hawk or hybrid, Flamborough, England

    This looked OK for an adult Red-tailed Hawk from the rear, although at times the cere appeared (pale) yellow. As far as I can gather, only juveniles have yellow ceres. From the front though, as well as the broad dark bar across the belly, this bird also has a broad dark bar across the breast...
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    Harris's Hawk or hybrid, Flamborough, England

    This juvenile presumed escapee has been around since 2 October. Pure Harris's Hawk or hybrid? First image by Andrew Allport, the others are mine. Brett
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    Caspianish Gull, Flamborough, England, 7 September 2023

    I'm puzzled by this gull. The bill colouration is strange, and a lot of white at the tips of the tertials. Didn't see it in flight (drifted south into the sun), but in a brief wing-lift the underwings were palish. I'd be very interested in others' opinions. Brett
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    White immature Whooper Swans, Flamborough, England

    I was puzzled by the young Whooper Swan in the first image, taken on 17 December 2019. An apparent 1st-winter with all-white plumage. Today, 31 January 2023, there was a similar bird in a group of 7. This consisted of 2 adults and five immatures, including the white bird in the second photo...
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    Gull, Flamborough, England

    Different opinions on this gull, photographed on 4 November. Thoughts welcomed. Brett
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    Strange large gull, Flamborough, England

    This gull was called as a Yellow-legged type, but there were some strange features, most noticeably the 'spangled' upperparts. As well as the broad fringes to the upperparts feathers, the basic colouration was 'black and white' like a young G B-b Gull rather than the brown and white of young...
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    Pied-type Flycatcher, Trevilly, Cornwall, 2 September 2022

    Got one shot of this bird before it flew off, and didn't see it again. Looked at the photo later that night and noticed the median bar, but I knew Pied could show this. Had a look at the Birding World articles when I got home today (3rd) and I'm very concerned about the narrow tertial fringes...
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    Juvenile large gull, Flamborough, England, 17 July 2022

    This juv gull seems to show mixed characters. I would appreciate others' opinions. Cheers Brett
  10. B

    Gull ID and age, Yorkshire, England

    I am puzzled by this gull, photographed today, 13 June 2022 at Filey Dams. Hard to decide whether it was a Yellow-legged Gull or a very pale graellsii L b-b Gull. Most of the time it appeared just a shade or two darker then the argenteus Herring Gulls, OK for Yellow-legged; just occasionally...
  11. B

    2cy Herring gull with blackish upperparts markings

    Not the first one I've seen like this, but I'm puzzled as to how they attain these blackish markings. Brett
  12. B

    Common Crossbill age and sex, Wykeham Forest, North Yorkshire, England

    I presume this is a 2cy female. Is that correct? Brett
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    Northern Wheatear age and race, Flamborough, England.

    I believe this is 2cy, but the wings are not a brown and faded as I would have expected. Is it Greenland? Svensson says of leucorhoa "2Y males may sometimes be recognised having prominent rufous-brown tinge (grey on upperparts visible only on proximal parts of feathers)". I seem to recollect...
  14. B

    Herring-type gull, Flamborough, England

    This appears to be a 1w Herring Gull, but the white head and all-black bill look strange. Comments welcomed. Brett
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    Trouble with Xeno-canto

    Is anyone else having trouble with Xeno-canto? Now when I click on a call or song, nothing happens. To listen to it, I have to click on the musical symbol next to the 3 horizontal lines top right, only sometimes that isn't there. I am on Windows 10. Any suggestions? Brett
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    Garganey age and sex

    When I first saw this Garganey at Flamborough on 10 May (1st image) it seemed an obvious female given the time of year. In the second image the narrow white tips to the secondaries meant it should be a 2cy, and the grey forewing semmed OK for female, but perhaps in retrospect a little too pale...
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    Bittern in breeding condition?

    In the first attached image, photographed at Thornwick Pool, Flamborough, on 25 April 2021, the bird shows a swollen yellow band from above the eye to the bill, and the gape line is similarly slightly swollen. The bird in the second image, photographed at the same spot on 15 February shows no...
  18. B

    Wing for ID, Flamborough, England

    Can anyone ID this wing for me? Found today on the cliffs at Flamborough. Wing length is 307 mm. Thanks Brett
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    Ordering of species, genera, families & orders.

    How is the order of species within genera, genera within families etc. decided? I see for instance that the BOU, following IOC, has just re-ordered the Phalacrocorax on the Britidh list; it is now Cormorant first, then Shag, then Double-crested Cormorant. What is this supposed to tell us...
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    Muscovy Duck hybrid, Yorkshire, England

    The bird in the attached photos taken at Burton Agnes pond, East Yorkshire, apears to be a Muscovy Duck hybrid, but with what? Could it be with Wood Duck? A male Wood Duck was present in 2016-2018 at least, and was reported to have hybridised with a Mallard and produced young in one year. The...
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    Redstart at Flamborough, England

    The bird in the attached photos was present at Flamborough on 17th & 18th September. The extent of white fringing to the remiges conjured up thoughts of samamisicus, but a study of the British Birds paper (BB 109:84-97) indicates otherwise. The Flamborough bird is a male and has to be 1w...
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    Gulls for ID, Cornwall, England

    Would appreciate opinions on the gulls in the attached photos, taken at Porthgwarra, 5 September. Is the first image just a juv Lesser Black-backed Gull? The next 3 images show the same bird. Head and bill look OK for 1cy Yellow-legged Gull, but the tertials would have to be 2nd gen for that...
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    Jackdaw with withered? greater coverts, Bempton, England

    What is going on with this bird, photographed at Bempton RSPB today? Where the greater coverts should be there are just these wispy whitish feathers. Parasite damage? Seems too symetrical. Very interested in the explanation. Brett
  24. B

    Passerine for ID

    These photos of a bird in a garden in Lincolnshire were sent to me for ID; I assume it's a selectively bred cage bird, but can anyone say which species (hybrid?)? Brett
  25. B

    Grey Heron ageing, Flamborough, England

    Is this a juvenile or 1st summer Grey Heron? Photographed today, 2 April. I know this would be very early for a juvenile, but that was my impression. Brett
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