The common redpoll is a species in the finch family. It breeds somewhat further south than the Arctic redpoll, also in habitats with thickets or shrubs. Nominate ''A. f. flammea'' breeds across the northern parts of North America and Eurasia. There is also an Icelandic subspecies, Icelandic redpoll , and one that breeds in Greenland and Baffin Island called the Greenland redpoll . Together the Iceland and Greenland forms are sometimes known as "northwestern redpolls". All forms migrate south into Canada, northern USA, or Eurasia. These birds are remarkably resistant to cold temperatures...hieroglyph snipped... and winter movements are mainly driven by the availability of food. There are two distinct populations united in ''islandica'', the relationships of which are unresolved.