Ornis Fennica 2020:3

Ornis Fennica 3/2020 contains the following articles: Timo Pakkala, Juha Tiainen, Heikki Pakkala, Markus Piha & Jari Kouki, Nest tree characteristics of Grey-headed Woodpeckers (Picus canus) in boreal forests; Emilia Grzedzicka, Impact of road distance and experimental challenge of the maternal immune system on the offspring immunocompetence; Juha A. Markkola & Risto T. Karvonen, Changing environmental conditions and structure of a breeding population of the threatened Lesser White-fronted Goose (Anser erythropus L.); Grzegorz Neubauer & Arkadiusz Sikora, Abundance estimation from point counts when replication is spatially intensive but temporally limited: comparing binomial N-mixture and hierarchical distance sampling models.