Saurola, P. (1985). Finnish birds of prey: status and population changes. Ornis Fennica, 62(2), 64–72. Noudettu osoitteesta https://ornisfennica.journal.fi/article/view/133177
Ornis Fennica is a peer-reviewed international ornithological journal published by BirdLife Finland. We publish analytical and experimental papers on the ecology, behaviour and biogeography of birds. Ornis Fennica is published quarterly with online early practice.