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

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  1. Joern Lehmhus

    Sparrow from Olifants Rest Camp, Kruger Park , January 1996

    Yes I came to the same conclusion that that species is really close from phenotype... but it does absolutely make no sense?!
  2. Joern Lehmhus

    Eagle from Southern Switzerland

    Though I have never before seen so much white on the mantle of a Golden eagle, with the additional photos it looks like that species ... But to me that is really a good and interesting example why a single photo can be problematic ....you get a momentary impression from the photo that might...
  3. Joern Lehmhus

    Sparrow from Olifants Rest Camp, Kruger Park , January 1996

    I think I may have presented this bird here already in the past, but it is still unsolved and bothering me ...Maybe today somebody can help? Size as House Sparrow, grey rump, brownish mantle with some spotting , but less than in House sparrow, wing without marked spotting lesser coverts very...
  4. Joern Lehmhus

    Eagle from Southern Switzerland

    Perhaps it would be good to add your additional pictures also , sometimes these can be a help even if one doesn´t expect it at first...
  5. Joern Lehmhus

    Eagle from Southern Switzerland

    I now think you are right - but what is it then? A rather odd golden eagle ? At least I can´t make it into that either? Bald eagle immature could have a broader dark area at the end of the tail , but that broad? And it would have to be an escape then... I ´ll settle to wait for one of the...
  6. Joern Lehmhus

    Kestrel, Lesser or Common French Pyrenees

    I think it is a Common with these barred secondaries and this moustachial stripe
  7. Joern Lehmhus

    Wagtail, Findhorn River 06/05/24

    It is a White
  8. Joern Lehmhus

    Taiwan BoP ID please

    my try to lighten it
  9. Joern Lehmhus

    Various at Eyebrook Res, South Leicestershire, UK

    It is drake Gadwall,yes...
  10. Joern Lehmhus

    An odd feather found on a patch walk on a plain in Epping Forest.

    https://media.featherbase.info/images/dfe2dd4c-78c6-4fc4-b03f-0224576650d3_full.jpg https://i.etsystatic.com/8720326/r/il/26f8b4/5059676835/il_fullxfull.5059676835_1btt.jpg
  11. Joern Lehmhus

    An odd feather found on a patch walk on a plain in Epping Forest.

    I think is a tail feather of a female mallard .. definitely not a scapular, these wouldn´t be pointed and not that flat looking, also not a tertial which can have a somewhat similar pattern in a few female mallards, but would be larger
  12. Joern Lehmhus

    Female hooded merganser? Eastern Ontario, Canada

    Could well be eclipse male due to yellow iris and all dark bill- however that would be early, I think...
  13. Joern Lehmhus

    Snipe and Dove from Mongolia

    But that seems similar also in these birds which seem to be identifird as hybrids: https://siberia.russia.birding.day/v2photo.php?l=en&s=070800070&n=2&t=1616&p=0&sortby=1&sor=desc&saut=all&si=sib...
  14. Joern Lehmhus

    Snipe and Dove from Mongolia

    Agree that it looks good , but is it fully safe to exclude a hybrid ? Not doubting your ID, but I do not have much experience with the species and Liebzi stated the bird was with feral pigeons, so I am interested to learn ...
  15. Joern Lehmhus

    Snipe and Dove from Mongolia

    Concerning the pigeon, Hill x feral Rock can show a rather broad pale tail area before the dark band, at the base of the feathers there is again a dark band, but i think often less sharply bordered to the pale band than in Hill pigeon, more washed out in a hybrid . The pale band itself can be...
  16. Joern Lehmhus

    Odd duck- mallardlike male without breeding plumage in Leipzig, Germany this march

    And it is the same variability in for example, mallard x koloa, mallard x pacific black duck etc. .. so I think probably not a single gene involved, but some more...
  17. Joern Lehmhus

    Odd duck- mallardlike male without breeding plumage in Leipzig, Germany this march

    huge variability , you can find a gradual change from nearly mallardlike birds to nearly black duck like birds...
  18. Joern Lehmhus

    Odd duck- mallardlike male without breeding plumage in Leipzig, Germany this march

    The intersex plumage in females seems to be in general due to hormonal issues. If female birds are low in estrogenes due to very old age or some pathological issue as for example ovary cancer, they tend to develop male plumage characteristics. This has been found for single individuals of...
  19. Joern Lehmhus

    Washington state may 24, gadwall or female cinnamon teal?

    To me also, this looks good for Cinnamon Teal
  20. Joern Lehmhus

    Odd duck- mallardlike male without breeding plumage in Leipzig, Germany this march

    This would be examples for domestic mallard breeds where male and female are more alike: https://www.dunlaphatcherypoultry.com/wp-content/uploads/2020/01/BLUE-SWEDISH-PAIR.jpg https://m.media-amazon.com/images/I/71yzLgL5f-L._AC_UF894,1000_QL80_.jpg...
  21. Joern Lehmhus

    Odd duck- mallardlike male without breeding plumage in Leipzig, Germany this march

    What sex then? As far as I know there is no possibility for a breeding plumage male domestic duck to show that much female type plumage . Yes, there are breeds where male and female look more similar than in wild mallard, but these have plumages highly deviating from wild type mallards. This...
  22. Joern Lehmhus

    Odd duck- mallardlike male without breeding plumage in Leipzig, Germany this march

    found by Micarusa and sent to me for identification help.... Micarusa informed me that this mallard-sized bird displayed as a male mallard, in a group with typically colored male mallards. It did the grunt-whistle, for example... I first considered an intersex plumaged female, but with that...
  23. Joern Lehmhus

    Various Raptors - South Essex UK - 12th May

    Well, from that single photo I think you can´t say that either of the birds looks like WTE. As you also proposed, I think the white is an artefact due to sun , like the reflection on the wing of this crow, which surely isn´t pale grey ...
  24. Joern Lehmhus

    Various Raptors - South Essex UK - 12th May

    which one? I see WTE fairly often in Northern Germany and can´t see either of the birds as that species ???
  25. Joern Lehmhus

    Scaup Type , Letham Fife

    It is a Tufted x Common Pochard, as already said and as shown by the shape of the black area at the bill tip and the head shape . However, also in this cross the grey areas are finely vermiculated - but much finer than in a scaup sp. x tufted duck
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