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Artykuł porusza praktyczne wykorzystanie kalkulatora on-line masy gniazdo bociana białego. Kalkulator on-line masy gniazda bociana białego to proste i bezpłatne narzędzie internetowe, które powstało przy okazji pomiaru masy 145 rzeczywistych gniazd tego gatunku. Średnia masa wszystkich poważanych gniazd wyniosła prawie 400 kg. Nawet nowo wybudowane gniazda osiągają imponujące rozmiary – ok. 70 kg...
Compared to non-flying nest-dwelling ectoparasites, the biology of most species of flying ectoparasites and its potential impact on avian hosts is poorly known and rarely, if ever, reported. In this study we explore for the first time the factors that may affect biting midge (Diptera: Ceratopogonidae) and black fly (Diptera: Simuliidae) abundances in the nest cavity of a bird, the hole-nesting blue...
Predation is considered an important factor affecting the life histories and breeding strategies of hole nesting birds. Breeding losses in this group of birds are related to such nest site characteristics as entrance size, nest site depth and danger distance - the distance between the outer edge of the entrance to the centre of the nest's bottom, which determines how far a predator unable to enter...
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