Ornis Polonica 2011, 52: 1–25
Changes in breeding bird communities of two urban parks in Wrocław across 40 years (1970–2010): before and after colonization by important predators
Ludwik Tomiałojć
Ornis Polonica 2011, 52: 26–39
Wintering of the Lapwing Vanellus vanellus and the Golden Plover Pluvialis apricaria in Poland in 1990–2008
Włodzimierz Meissner, Arkadiusz Sikora, Sebastian Guentzel, Jacek Antczak
Ornis Polonica 2011, 52: 40–52
Decline in the numbers of the Eurasian Curlew Numenius arquata in western Poland in 1980–2010
Łukasz Ławicki, Przemysław Wylegała
Ornis Polonica 2011, 52: 53–61
Relationship between the quality of song and condition and immunocompetence in songbirds
Magdalena Herdegen
Ornis Polonica 2011, 52: 62–67
Distribution, numbers and habitats of the Ring Ouzel Turdus torquatus in the Beskid Wyspowy Mts.
Łukasz Kajtoch
Ornis Polonica 2011, 52: 67–69
High densities of the Aquatic Warbler Acrocephalus paludicolain the Biebrza Marshes in spring 2010
Michał Polakowski
Ornis Polonica 2011, 52: 69–71
Reuse of a nest in Reed Warbler Acrocephalus scirpaceus
Lucyna Hałupka, Ewelina Klimczuk
Ornis Polonica 2011, 52: 72–73
Mystery bird 62: Dunlin Calidris alpina
Jan Lontkowski
