opisska
Jan Ebr
If I understand it correctly, the main problem with Scottish Crossbill is that you can't tell it by DNA, just by the call. So it's in fact just a population that keeps a specific call - I presume that if you took eggs of a "Scottish" Crossbill and gave them to a Red pair to raise, you would get a perfectly normal Red Crossbills as a result, since there is nothing inherent about them? I don't know how it is with this Casia Crossbill but it gives the vibe that it could be pretty similar.


