Common Redpoll Acanthis (prev. Carduelis) flammea

Common Redpoll
Mealy Redpoll
The Common Redpoll, also called Mealy Redpoll, is native to northern regions of Eurasia and North America. These photos of the Common Redpoll were taken in Kazakhstan by Alexandra Makhnina.
Lesser Redpoll
Lesser Redpoll
Lesser Redpoll
They are similar in appearance to the Lesser Redpoll (below); they were split only in recent years. They are also similar to other (non-UK) Redpolls and fairly similar to the Linnet (Linaria prev. Carduelis cannabina).
Lesser Redpoll
Lesser Redpoll
Lesser Redpoll
The photos above are of winter plumage, much less red than the summer plumage shown (for Lesser Redpoll) below. Final photo shows one Redpoll among mixed flock of Fire-fronted Serins and Eurasian Siskins.

Lesser Redpoll Acanthis (prev. Carduelis) cabaret

Lesser Redpoll
Lesser Redpoll
Lesser Redpoll
The Lesser Redpoll was split from the Common (Mealy) Redpoll only in recent years. They are very similar; the Lesser is a little smaller and darker. They are also similar to other (non-UK) Redpolls and fairly similar to the Linnet. The Lesser Redpoll's range is north/central Europe, mainly British Isles and Denmark, plus introduction to southern New Zealand (unlike Common Redpoll and Linnet).
Lesser Redpoll juvenile
Lesser Redpoll juvenile
Lesser Redpoll
The female has a red crown but not a red breast; the male has both and the juvenile has neither and is more streaky.