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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

    Crow, Croatia - Hooded, Black or hybrid?

    Excellent link demonstrating the pitfall of thinking grey feather bases on Carrion Crow are due to hybridity even in the hybrid zones which is the point I also made above with regard to the OP.
  2. Deb Burhinus

    Crow, Croatia - Hooded, Black or hybrid?

    That’s what I said in my post #5 above Andy. On these unclear images, we have to disagree there are visible signs of hybridity, even though non-expressed hybridity as I said, can not be ruled out due sympatric occurrence/contact zones.
  3. Deb Burhinus

    Crow, Croatia - Hooded, Black or hybrid?

    Interesting analysis Alex but I can’t see a hood or even ghost of one imo or at least enough clarity to say the ‘hood’ is more than just how the light is falling on different directional feathers and the angle to of the sun. In the first image #1 the right side of the bird’s head (facing us)...
  4. Deb Burhinus

    Crow, Croatia - Hooded, Black or hybrid?

    Where Carrion Crow and Hooded Crow are sympatric, I’m not sure you can ever really rule out some mixed gene heritage but it looks like a straight forward CC nonetheless - those pale spots are just the paler feather bases showing. ( x post with Tom!)
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