Ornis Polonica 2013, 54: 77–95
Changes in numbers of selected species during the non-breeding period in the central Północnopodlaska Lowland, in 2000–2011
Łukasz Jankowiak, Michał Polakowski, Tomasz Kułakowski, Piotr Świętochowski, Tomasz Tumiel, Monika Broniszewska
Ornis Polonica 2013, 54: 96–108
Spring migration of swans in the Biebrza Basin
Michał Polakowski, Monika Broniszewska
Ornis Polonica 2013, 54: 109–150
Rare birds recorded in Poland in 2012
Komisja Faunistyczna
Ornis Polonica 2013, 54: 151–156
Numbers and breeding results of the Capercaillie Tetrao urogallus in the Augustów Forest in 2011
Dorota Zawadzka, Grzegorz Zawadzki, Grzegorz Myszczyński, Adrian Bagnowski, Krzysztof Bednarski
Ornis Polonica 2013, 54: 157–158
Mystery bird 71: Common snipe Gallinago gallinago
Jan Lontkowski
