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

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  1. Amsel

    wheatear ID - Iran

    Hello Ali! Looks more like a Pied Bushchat Saxicola caprata. Greets Tom
  2. Amsel

    Bluethroat subspecies ID, Morocco

    And here is another reference (biometrics): http://www.birdlife.fi/julkaisut/of/pdf/vol83-4/3Arizaga2608.pdf Tom
  3. Amsel

    Bluethroat subspecies ID, Morocco

    Hello Mohamed! The correct ID of bluethroats subspecies - especially outside the breeding season - is not that easy... Beside the colouration of the breast spot also the shape of this spot is an important character, as also cyanecula can show a reddish spot (or also a completly blue breast)...
  4. Amsel

    Vagration theory

    There are at least two major references which describe the topic and also cite many other important works: Ian Newton (2007) The migration ecology of birds. 984 pages, ACADEMIC PRESS. ISBN-13: 978-0-12-517367-4 ISBN-10: 0-12-517367-9 Peter Berthold, Hans-Günter Bauer (2001) Bird Migration: A...
  5. Amsel

    Ringed Egyptian Vulture, Fuerteventura

    Seems to be a bird from a local project: Taken from http://www.cr-birding.be/ Yellow ring with an alphanumeric code of 3 engraved characters. Oficina de Anillamiento, Estación Biológica de Doñana, Apdo. Correos nr4, SP-21760 Matalascañas (Almonte), Huelva, Spain. tel. : +34-959-44.00.32. ...
  6. Amsel

    Marsh Reed?

    As already mentioned before: Look at the undertail coverts - they seem to cover about 2/3 of the undertail! A feature never seen in Hippolais warblers...
  7. Amsel

    Clark's Grebe and ?

    Are there any photos of juvenile Clark`s in the net? I found only this one (quite young juvi): http://bailey.aros.net/nature/images/Clark's%20Grebe%20and%20baby.jpg
  8. Amsel

    Clark's Grebe and ?

    Yes, Lou - perhaps the best explanation, but why is the bill that dark? And why the bird looks bigger than the Clark`s Grebe? Really a strange bird... Would be probably the first hybrid between Red-necked & Clark`s! Here you can see other cases of hybridisation between grebes...
  9. Amsel

    When does Lesser Spotted Eagle departs from Europe.

    Yes - they aren`t! Maybe a Lesser or a Greater Spotted or even something else |=)|
  10. Amsel

    When does Lesser Spotted Eagle departs from Europe.

    Spotted Eagle (A. clanga) is also possible... They migrate later than LSE and are very dark! Greets Tom
  11. Amsel

    Clark's Grebe and ?

    The bird looks indeed like a Great Crested Grebe, but something seems to be `strange`on this bird! The bill colour looks very dark (more typical for breeding season) and the bill seems to be quite short, very broad at the base and of very straight shape. Also the feathers on the upper head...
  12. Amsel

    Humes Yellow Brow Call

    Eastern Bird calls Then you should buy "Calls of Eastern Vagrants" by Hannu Jännes! There is also a nice CD offered by Dutchbirding Association: http://www.dutchbirding.nl/journal/outoftheblue.html Best wishes Tom
  13. Amsel

    Influx of Little Auks into the southern North Sea

    Maybe - all birds flew in westerly direction... Good night Tom
  14. Amsel

    Influx of Little Auks into the southern North Sea

    Today a large movement of Little Auk (Alle alle) into the German Bight took place! This influx was initiated by strong (north)westerly winds yesterday. On Helgoland several hundred (about 200-350 ind.) passed today. Also large numbers were recorded at the North Sea coast and of Germany and at...
  15. Amsel

    Last help for today

    Last but not least???
  16. Amsel

    Sparrowhawk

    Kestrel - you are right! o.k. you are right! Finally I have also joined the Kestrel-Fraction :o)! The flying bird surely IS a Kestrel (or to be more precise: Lesser Kestrel, for example, is not a 100 % excluded ;o)! Therefore I am now also quite surprised that some other birders, even from the...
  17. Amsel

    Sparrowhawk

    The truth lies in detail Sometimes not the number of identification votes matters but the quality they are made with! Nevertheless here are more than 9 birders on the island with the same opinion as mine - Peregrine! Please check every detail described (I think there was hardly any from the...
  18. Amsel

    Sparrowhawk

    I have shown Dieters picture to other birders (there are a quite of lot of them here - including Klaus Malling Olsen :) and people from local rarities committees - they also identified the bird as "a large falcon" or more detailed as Peregrine (maybe of northeastern origin (calidus), because of...
  19. Amsel

    Phy. inornatus sound

    More, very detailed information (including sound files) can be found at http://www.dutchbirding.nl/ under sound gallery! There is also a comparison with Hume`s Yellow-browed Warbler... Greets Tom
  20. Amsel

    Sparrowhawk

    The bird shows a clear moustachial stripe - so (abeit other features) no Sparrowhawk! It is much too bulky and compact for a Common Kestrel (this species shows a much longer tail Compare this Kestrel http://www.waarneming.nl/fotos/204809.1.jpg with this Peregrine (sadly there is an adult bird...
  21. Amsel

    Greets from the Island!

    :hi: My name is Thomas (call me "Tom") and I am working at the Institute of Avian Research "Vogelwarte Helgoland" investigating the genetic strucure and migration behaviour of Common Blackbird (Turdus merula) on the tiny island of Helgoland in the German Bight. The ringing station on the...
  22. Amsel

    Sparrowhawk

    This is surly not a Kestrel (Upperparts dark brownish, not orange-brown, tail too short with no black terminal band, white cheeks,...)! Everything points towards 1st year Peregrine (although size is difficult to asess; a Merlin should show e.g. a weaker moustachial stripe and darker cheeks)...
  23. Amsel

    Waders for ID - Spain

    In most cases you are right! 1879 Common Sandpiper 1908 Dunlins all are in juvenile/1st winter plumage 1915 Ruff 1927 most probably Dunlin 1931 Dunlin 2078 Sanderling Greets Tom
  24. Amsel

    Slender-billed Gull?

    Surely a 1st winter Mediterranean Gull and an adult-type Black-headed Gull! Greets Tom
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