Blackcap (Sylvia atricapilla) Science Article 2 abstract To describe the phenology of migratory passages and wintering of Blackcaps.Location: Orange plantations in eastern Spain.Methods: Data were collected between 1997 and 2002 at a Constant Effort Site. Results: We captured between 94 and 206 individuals per season (from September to April of the next year). We used […]
Category: Passeriformes
Impaired Predator Evasion in Fat Blackcaps (Sylvia atricapilla)
Blackcap (Sylvia atricapilla) Science Article 9 abstract When birds are attacked by predators, take-off ability is crucial for the chance of survival. Recently, theoretical studies have predicted that predation risk in terms of reduced flight performance increases with body mass. Cecilia Kullberg, Thord Fransson and Sven Jakobsson, Proc. R. Soc. Lond. B 22 December 1996 […]
Effects of fat reserves on annual apparent survival of blackbirds Turdus merula
Blackbird (Turdus merula) Science Article 5 abstract Fat reserves are stored energy that may help birds survive periods of harsh winter weather. This hypothesis predicts that annual apparent survival is higher for birds with large fat reserves than for birds with few or no fat reserves in winter. Blackbirds (Turdus merula Linnaeus) were ringed in […]
The effect of nest-height on the seasonal pattern of breeding success in Blackbirds Turdus merula
Blackbird (Turdus merula) Science Article 3 abstract An urban Blackbird Turdus merula population was studied in Budapest from 1986 to 1989. Seasonal pattern of breeding success was similar in three out of the four years: early nests were successful then the success rapidly fell, reaching another maximum in the third part of the breeding season, […]
Body mass change strategies in blackbirds Turdus merula: the starvation-predation risk trade-off
Blackbird (Turdus merula) Science Article 4 abstract It is theoretically well established that body mass in birds is the consequence of a trade-off between starvation risk and predation risk. There are, however, no studies of mass variation from sufficiently large wild populations to model in detail the range of diurnal and seasonal mass change patterns […]
Is urbanisation of European blackbirds (Turdus merula) associated with genetic differentiation?
Blackbird (Turdus merula) Science Article 2 abstract Because of the extreme ecological and environmental changes along an urban-rural gradient, it has been proposed that urbanised and non-urbanised populations of the same species may be distinctly isolated. There is evidence that urban populations have become significantly different from the original forest populations in several aspects. However, […]
Recruitment patterns of Blackbirds (Turdus merula) in urban fragmented populations
Blackbird (Turdus merula) Science Article 1 abstract The purpose of this paper is to study the effects of habitat fragmentation on Blackbird Turdus merula recruitment in 21 urban parks in the city of Madrid (Spain) during two consecutive breeding seasons (1997-98). We found that: (1) recruitment did not vary between years, showing high levels of […]
A Black and White Warbler’s Nest with Eight Cowbird Eggs
Black-and-white Warbler (Mniotilta varia) Science Article 1 abstract In an oak-hickory woodland about three-quarters of a mile southeast of Half Moon Lake, Washtenaw County, Michigan, I found, on May 16, 1949, a nest of the Black and White Warbler GEORGE W. BYERS, Wil. Bull. 62, 3 1950 Download article download full text (pdf)
Heterospecific rival recognition in Black Redstart (Phoenicurus ochruros)
Black Redstart (Phoenicurus ochruros) Science Article 4 abstract It has long been hypothesized that birds learn to recognize heterospecific competitors and for that reason males behave more aggressivelyagainst intruders in areas of local sym- patry.Recently,ithasbeenconfirmedthatindividualsofonespeciesareabletolearnspe- cies-specific visual and acoustic characteristics of heterospecific rivals and that theyare able to remember these associations. Here, we test hypotheses […]
Young Cuckoo (Cuculus canorus) in the nest of the Black Redstart (Phoenicurus ochruros)
Black Redstart (Phoenicurus ochruros) Science Article 2 abstract I found a young cuckoo (Cuculus canorus) in the nest of the black redstart (Phoenicurus ochruros) in the viticultural area of Andra{evec (46 deg 00’N, 15 deg 57’E), in north-western Croatia, on June 15, 2004. The nest was situated on an outer wooden beam of a building […]