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

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  1. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    it is easy to toggle between vernacular names - including between US and UK English names but you can't toggle between taxonomies as that would require restructuring the entire database, eBird, BOTW and Merlin accounts for all the different taxa etc etc. Better to continue moving towards a...
  2. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    https://www.birdforum.net/threads/redpolls.75309/page-2#post-2277503
  3. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    Thanks Xenospiza. From de Knijff 2014's explainer of the Science paper One particular 1.95-Mb segment, on the avian chromosome 18, showed clear genetic differentiation between carrion crow and hooded crow individuals. This region encompassed 81 of all 83 fixed differences [of 8.4 million...
  4. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    Not really. Its like saying let's lump the Arctic Warbler complex or even the treecreepers as they are hard to ID - despite being field identifiable at times. What other examples apart from the Pterodromas upset you?
  5. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    Have a read of New research: Redpoll species are all one they aren't recognising each other which is why there is geneflow.
  6. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    There is a relatively narrow and stable hybrid zone between the crows but massive genetic admixture between redpolls. Who said they were similar in NL?
  7. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    Examples that upset you that are widely-accepted at the species level?
  8. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    I don't miss the point - you wanted to lump Zino's which is field identifiable in #15. Desertas has yet to be split by all authorities and may yet prove to be field identifiable. I can't ID various vizmig passerines but that doesn't mean we need to lump them - if you feel upset by seawatch views...
  9. Z

    How do birders want species-definition to be determined? Via Morphology, assortative breeding, or DNA analysis?

    Given that logic it maybe best to lump all 'jaegers' too as these are routinely misidentified on seawatches (and even when sat on reservoirs inland), then you can just tick 'Jaeger' or 'Small Skua'. One problem with this taxonomic concept is the historical geneflow between Pomarine and the...
  10. Z

    Ivory-billed Woodpecker: takeoffs with deep and rapid flaps + wing noises

    https://www.birdforum.net/threads/ivory-billed-woodpecker-continued.403334/post-4136046 sophomoric is a favourite word for extinct woodpecker sock-puppet accounts https://www.birdforum.net/search/1828668/?q=sophomoric&o=relevance
  11. Z

    OBC database shutting down ☹️

    Viewing ML is also free https://ebird.org/media/catalog
  12. Z

    Ivory-Billed Woodpecker continued

    Or not as the case may be.
  13. Z

    Ivory-Billed Woodpecker continued

    USFWS have got that now. They really need to invest in saving what remains of the insular avifauna of Hawaii.
  14. Z

    Ivory-Billed Woodpecker continued

    I heard that USFWS are working on sasquatch instead as it is more likely to be recoverable https://sasquatchchronicles.com/forums/topic/official-usfws-training-center-discussion-on-sasquatch-video/ my mate who is on QAnon says it is dead legit. Deep state conspiracy to delist IBWO by XXXXXX.
  15. Z

    Ivory-Billed Woodpecker continued

    If IBWO were extant I would anticipate sightings of birds out of habitat. Of course documenting them would be easy in that case.
  16. Z

    Ivory-Billed Woodpecker continued

    ahhh back to conspiracy theories! They declared it extinct because they haven't the money/staff. I bet that sounded good in your head. Coming back as Diane again? Good day to you too.
  17. Z

    Ivory-Billed Woodpecker continued

    Just to clarify that Hauksen was the first to point that document out and that it isn't a peer-reviewed paper but a peer-reviewed government review which will have been very sensitive to IBWO politics - even Mike Collins gets a mention! The review tactfully concludes that the rediscovery was...
  18. Z

    Ivory-Billed Woodpecker continued

    Possibly the worst take in this thread. Just to reiterate and contrary to your earlier assertions USFWS is on the cusp of delisting IBWO Although there have been many sightings reported over the years since the last agreed upon sighting in 1944, there is much debate over the validity of these...
  19. Z

    Ivory-Billed Woodpecker continued

    Description done: "initially looked like a loon"
  20. Z

    Ivory-Billed Woodpecker continued

    last seen trying to get help, great that s/he is being proactive.
  21. Z

    Ivory-Billed Woodpecker continued

    Will the real Mike Collins please stand up.
  22. Z

    Ivory-Billed Woodpecker continued

    so IBWO hunted for millenia then? And yet they suddenly learned to be invisible after the 1940s?
  23. Z

    Ivory-Billed Woodpecker continued

    Its a poor video taken by someone who thought they were seeing an extinct species. People give credence to BAWA sightings from '88, in a manner not dissimilar to people giving credence to IBWO sightings on Cuba at the same time. Either way all unconfirmed and unlikely. I'll not walk you through...
  24. Z

    Ivory-Billed Woodpecker continued

    It wasn't for your benefit, but for Bottomlands claiming there are no contemporary reports.
  25. Z

    Ivory-Billed Woodpecker continued

    The point is that the bird has been reported in the 21st century based on video footage which defies confirmation. Not unlike....
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