Evolution
This bird may have reached America either from Asia or from Europe (Greenland/Iceland). It is the extant parental species of one of the Spinus/Carduelis three evolutive North American radiations. That of atriceps, pinus and dominicenses finches. It has been recorded both in Aleutian Islands and the East: Labrador Peninsula and St. Lawrence River mouth (Canada). This opens the possibility that this bird entered (or still try to enter) America through Greenland/Iceland from West Europe.
Read more about this topic: Eurasian Siskin
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