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

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  1. Deb Burhinus

    Redpoll help in Oxford, Ontario

    Just for clarity, I was referring to the wiki image - Quebec seems within range https://ebird.org/species/hoared1?siteLanguage=en_GB There’s quite a lot of sexual dimorphism in size so perhaps a female. Enjoy the article - it’s pretty comprehensive and a little heady but worth a read.
  2. Deb Burhinus

    Redpoll help in Oxford, Ontario

    - and of course male flammea (Mealy) are frostier than females! (it would help when using reference photos to say when they were taken (also the ssp, sex and age of the individual if possible!) That’s actually a hornemanni (Hornemann’s Arctic) I suspect, rather than an exilipes (Hoary/Coues’s)...
  3. Deb Burhinus

    Redpoll help in Oxford, Ontario

    Yes, these later images (with good views in image 3 of the utcs) I think dispel any hope of Arctic here.
  4. Deb Burhinus

    Redpoll help in Oxford, Ontario

    Structurally it looks quite good for exilipes - it looks quite bulky particularly around the neck and has quite a ‘pinched face’. The white fringing on the flight feathers are also good exilipes features. However, it has quite a large poll and is also quite heavily streaked on the flanks and...
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