In autumn, only 50 species of birds remain in the Krustkalni Nature Reserve for the winter. These are not only sparrows (great and long-tailed tits, field and house sparrows, European greenfinch (Chloris chloris), Eurasian siskin (Spinus spinus), brown-headed nuthatch, willow tit (Poecile montanus)), but also representatives of other series, in particular, northern goshawk (Accipiter gentilis), black woodpecker (Dryocopus martius), lesser spotted woodpecker (Dryobates minor) and great spotted woodpecker (Dendrocopos major). At this time, crows become very noticeable: western jackdaw (Coloeus monedula), Eurasian magpie (Pica pica), common raven (Corvus corax), hooded crow (Corvus cornix).
