Song Sparrow (Melospiza melodia) Science Article 8 abstract Models of sexual selection propose that exaggerated secondarysexual ornaments indicate a male’s own fitness and the fitnessof his offspring. These hypotheses have rarely been thoroughly testedin free-living individuals because overall fitness Jane M. Reid et al, Am. Nat. 2005. Vol. 165, 2005 Download article download full text […]
Song repertoire size varies with HVC volume and is indicative of male quality in songsparrows (Melospiza melodia)
Song Sparrow (Melospiza melodia) Science Article 9 abstract Complex birdsong is a classic example of a sexually selected ornamental trait. In many species, femalesprefer males with large song repertoires, possibly because repertoire size is limited by the size of songcontrol nuclei which reflect developmental success Jeremy A. Pfaff et al, Proc. R. Soc. B (2007) […]
SONG SPARROW (MELOSPIZA MELODIA) SONG VARIESWITH URBAN NOISE
Song Sparrow (Melospiza melodia) Science Article 1 abstract In urban environments, anthropogenic noise may mask bird song,especially the notes occurring at lower frequencies (1
A NEST-BUILDING MALE SONG SPARROW
Song Sparrow (Melospiza melodia) Science Article 13 abstract IN early March, 1933,a Song Sparrow (Melospiza melodia beata) came to our neighborhooda, rather closely built-up section of northeastern Columbus, Ohio. WILLIAM E. SCHANTZ, The AUK vol.54, 1937 Download article download full text (pdf)
BREEDING HABITS OF THE SOLITARY SANDPIPER
Solitary Sandpiper (Tringa solitaria) Science Article 1 abstract EARLY this spring I became aware of the fact that at least one pair of Sandpipers, different from the Spotted Sandpipers, which breed commonly on Simcoe Island, had taken up their residence there. C. K. CLARKE, The AUK(15):328-329, 1898 Download article download full text (pdf)
International Single Species Action Planfor the Conservation of theSociable Lapwing
Sociable Lapwing (Vanellus gregarius) Science Article 1 abstract The Sociable Lapwing breeds currently in Kazakhstan and central part of southern (further ‘southcentral’)Russia. Its breeding range includes northern and central Kazakhstan, and in Russiaextends currently from the Orenburg region, across Chelyabinsk, Kurgan, Omsk and Novosibirskregions to the area around Barnaul in the Altai. Within this area […]
DAILY TEMPERATURE CYCLES IN BARRED, GREAT-HORNED AND SNOWY OWLS
Snowy Owl (Nyctea scandiaca) Science Article 3 abstract This paper reports preliminary data on daily rhythmic fluctuations in skin and deep body temperatures of captive owls, and is a by-product of research aimed at the development of radio-telemetric techniques suitable for continuous, simultaneous monitoring of certain physiological and behavioral activities of unrestrained birds in the […]
Diet of Finnish Snowy Owls Nyctea scandiaca
Snowy Owl (Nyctea scandiaca) Science Article 1 abstract The Snowy Owl has, during the last 70 years, bred in Finnish Lapland only in 1974, 1987, and 1988. We collected diet material directly from nest bowls, and from pellets found around the nests and at the resting sites of adults and young. These three parts may […]
First fossil record of the Snowy Owl Nyctea scandiaca (Linnaeus, 1758)(Aves: Strigidae) from Bulgaria
Snowy Owl (Nyctea scandiaca) Science Article 2 abstract The Snowy Owl is a resident species, spread in the Arctic zone. Sometimes itmakes irregular dispersial movements to the south. It inhabits the hilly tundraand rocky coasts. It nests on the ground. Separate individuals may reach the Temperate zone during their nomadic migrations (Harrison, 1982). Zlatozar BOEV, […]
The impact of goose grazing on arctic and temperate wetlands
Snow Goose (Anser caerulescens) Science Article 1 abstract Geese are large, herbivorous birds that graze in huge flocks in ways that may have a considerable impact onvegetation. This is exemplified best in two subspecies of snow geese, the lesser and the greater, both of which have increaseddramatically in numbers in recent decades. In arctic coastal […]