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

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  1. Acanthis

    Time calibration and Linnean ranks in birds

    Already an update required for the next version of L'inventaire 😉
  2. Acanthis

    Time calibration and Linnean ranks in birds

    Yeah that's a firmer placing. Still a pretty early divergence
  3. Acanthis

    Time calibration and Linnean ranks in birds

    I recall Sporopipes has an interesting position with regard to the other Ploceids. Though perhaps it isn't well supported? Can't check at the moment
  4. Acanthis

    Time calibration and Linnean ranks in birds

    Pretty much 'snap!' I'll check for differences but it looks much the same as I worked out, and very satisfying it was too😌
  5. Acanthis

    Time calibration and Linnean ranks in birds

    It's very much a work in progress but I will tidy up a copy and email it to you👍
  6. Acanthis

    Time calibration and Linnean ranks in birds

    I did and on checking the book it appears that I was looking at the unconstrained tree in error earlier this morning. The book's main results are derived from the constrained tree. If you were to use the unconstrained ages for the core Tyrannidae there would be four clades older than 14 my...
  7. Acanthis

    Time calibration and Linnean ranks in birds

    OK so the core Tyrannidae is intact with all represented clades less than 15 my old. Perhaps I should have written Tyrannides. Anyway Pipromorphidae and Tachurisidae separate - no surprises! Platyrinchidae has a split around 18mya between Platyrinchus and Neopipo Tityridae has a similar but...
  8. Acanthis

    Time calibration and Linnean ranks in birds

    Yup! I'm looking at "The Largest Avian Radiation" 's dated phylogenetic tree right now and that works for many traditional families. And for those of us who like odd or unusual splits, there are a few unexpected delights. For instance Turdidae and Tyrannidae😊
  9. Acanthis

    Time calibration and Linnean ranks in birds

    Cool! There's one or two of these I hadn't considered separating since time-calibration wasn't my top priority, but will give them another look now. Thanks!👌
  10. Acanthis

    Time calibration and Linnean ranks in birds

    Very interesting!🤔 I must ponder over these as soon as I have some time
  11. Acanthis

    Time calibration and Linnean ranks in birds

    I love "Silver Plover". Nice concept which fits well with impressions the summer plumage lends. Golden lapwing is just weird🙃
  12. Acanthis

    Time calibration and Linnean ranks in birds

    That sounds fascinating! I'd love to compare it to my own little 'collapsed hierarchy' mind-excercise👍
  13. Acanthis

    Time calibration and Linnean ranks in birds

    Cheers Mike! That'll be it (y)
  14. Acanthis

    Time calibration and Linnean ranks in birds

    Well I can't really speak for Denmark or the rest of the UK but here in Scotland I've only ever seen breeding golden plovers in cold, bleak, windswept, upland places. Not true tundra perhaps but as close as you can get to it on the island of Britain. Also, a full quarter of the group are not...
  15. Acanthis

    Time calibration and Linnean ranks in birds

    I've come across "Tundra Plovers" somewhere as a nice alternative to "Golden-Plovers" Can't remember where🤔
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