Longitude specific difference in timing of seasonal functions in two northern populations of the Common Redpoll Carduelis flammea

Pohl, H., & West, G. C. (1978). Longitude specific difference in timing of seasonal functions in two northern populations of the Common Redpoll Carduelis flammea. Ornis Fennica, 55(1), 36–38. Noudettu osoitteesta https://ornisfennica.journal.fi/article/view/132960