Black Redstart (Phoenicurus ochruros) Science Article 3 abstract We studied the effect of supplementary food on time allocation, breeding success and parental body condition in Black Redstarts Phoenicurus ochruros in the Alps, NW. Italy. Time budgets of both males and females were significantly affected: individuals provided with supplementary food spent less time foraging and more […]
Category: Passeriformes
The evolutionary history of Eurasian redstarts, Phoenicurus
Black Redstart (Phoenicurus ochruros) Science Article 1 abstract The bird genus Phoenicurus comprises 10 to 11 species that occur from Europe through Asia. To resolve theirphylogenetic relationships, their phylogeography and the tempo of their evolution, the mitochondrial cytochrome-b gene wassequenced for 16 taxa. The Bayesian maximum likelihood tree and neighbor-joining dendrogram computed from the resultingdata […]
Berthelot’s Pipit feeding on lizard
Berthelots Pipit (Anthus berthelotii) Science Article 1 abstract On 29th August 2006, we observed several Berthelot’s Pipits Anthus berthelotii feeding along the rocky coast of La Santa, Lanzarote, Canary Islands. One bird captured a smallendemic lizard Gallotia atlantica. Dr J. T. R. Sharrock, British Birds 100, July 2007, 443-445 Download article download full text (pdf)
Conirostrum bicolor Parasitized by Molothrus bonariensis in Surinam
Bicolored Conebill (Conirostrum bicolor) Science Article 1 abstract Hellmayr (Field Mus. Nat. Hist. Publ. 347, Zoo1. Set. vol 13, 1935, p. 319) includes Surinam in the range of Conirostrum bicolor on evidence of the Penard brothers (Vogels van Guyana, 2, 1910, p. 475), though he mentions no specimens nor localities. In Surinam, as elsewhere in […]
BAY-BREASTED WARBLER Dendroica castanea: Species Information
Bay-breasted Warbler (Dendroica castanea) Science Article 3 abstract The Bay-breasted Warbler is a neotropical migrantsongbird. It is one of 12 species of warbler in thegenus Dendroica that breed in British Columbia(Campbell et al. 2001). No subspecies are recognized(AOU 1957; Cannings 1998). John M. Cooper and Suzanne M. Beauchesne, Accounts and Measures for Managing Identified Wildlife […]
NESTING OF THE BAY-BREASTED WARBLER
Bay-breasted Warbler (Dendroica castanea) Science Article 1 abstract IN most of the publications dealing with the avifauna of eastern United States, the Bay-breasted Warbler (Dendroicac astanea) is considered a rare or at least an uncommon bird. Frequenting the coniferous forests of the Canadian Zone, it breeds within this country in only a few of the […]
The effect of age and sex on wing morphology and body size of the Bearded Tit Panurus biarmicus in relation to complete moult
Bearded Tit (Panurus biarmicus) Science Article 6 abstract In sedentary birds, variation in wing morphology as a result of complete moult during the transition from juvenile to adult plumage is poorly understood. The aim of this study was to characterise sex- and age-related differences in wing morphology resulting from a complete post-juvenile moult in an […]
Repeatability of egg dimensions within the clutches of Bearded Tit Panurus biarmicus
Bearded Tit (Panurus biarmicus) Science Article 3 abstract The variation in size and shape of Bearded Tit eggs was investigated in the Wielkopolska Region of western Poland in 1988-1992 and 1997-2000. The mean clutch size was 5.47 (95% CL: 5.25-5.70, n = 99), and differed markedly from year to year. Coefficients of variations for the […]
Individual and temporal variation in cloacal protuberance size of male bearded tits (Panurus biarmicus)
Bearded Tit (Panurus biarmicus) Science Article 2 abstract The intensity of sperm competition is one of the factors known to determine interspecific variation in the size of male reproductive organs. However, individual variation in the size of reproductive organs and its relation to male quality have not been considered appropriately. We investigated the annual pattern […]
A survey of the Bearded Tit Panurus biarmicus during the non-breeding season in a landscape of western Poland
Bearded Tit (Panurus biarmicus) Science Article 5 abstract The population of Bearded Tit was studied on a 1872 km2 study area of predominantly agricultural landscape in W Poland, near Poznan. During the non-breeding period (October-March) surveys were made every 10-14 days on a sample of 44 marshlands selected at random out of 240 suitable habitat […]