Woodchat Shrike (Lanius senator) Science Article 1 abstract The Woodchat Shrike (Lanius senator) is a passerine species, which is considered to have un- dergone a large decline throughout its breeding range in Europe. Its distribution has retracted towards the south and it was recently classified as ‘Vulnerable’ (Tucker et al. 1994, Lefranc 1997). In spite […]
Category: Eurasia
Breeding Woodcock Scolopax rusticolamonitoring in France
Woodcock (Scolopax rusticola) Science Article 1 abstract The French breeding Woodcock population has been monitored since 1988, and since 1991, the monitored geographical area has been representative of that population. Monitoring is based on observing roding males, the methodology being random sampling with replacement. The annual results are expressed as a frequency of occurrence. The […]
The census and distribution of winteringwoodpigeons Columba palumbus in theIberian peninsula
Wood-Pigeon (Columba palumbus) Science Article 1 abstract Throughout the 1997-1998, 1998-1999 and 1999-2000 seasons, Woodpigeon population censuseswere carried out in their traditional Iberian wintering area, which comprises the southwesternquadrant of the Peninsula. The method applied was the direct counting of flocks incommunal roosts, of which 210 have been checked so far. Four counts were carried […]
How perception and density-dependence affect breeding Woodlarks Lullula arborea
Wood Lark (Lullula arborea) Science Article 2 abstract There is often a perceived conflict between allowing recreational access to the countryside and wildlife conservation. Although many studies have investigated potential impacts on birds, few have assessed the potential impacts of recreational disturbance at the population scale. We studied the impact of disturbance on a Woodlark […]
Abundance of Four Lark Species in Relationto Portuguese Farming Systems
Wood Lark (Lullula arborea) Science Article 1 abstract Throughout much of Europe, farmland birds have declined more than those of other habitats, because of the abandonment of traditional farming systems and the simplification of remaining agricultural systems, including increased use of external inputs (Tucker & Heath 1994, Baldock 1991, Bignal & McCracken 1996). Traditional low-input […]
Open-habitat birds in recently burned areas: the role of the fire extent and species’ habitat breadth
Wood Lark (Lullula arborea) Science Article 3 abstract Single burned areas contained 0 to 15 open-habitat species (mean = 7.6), and in all the areas combined there were 22 species, including 17 with an unfavourable conservation status in Europe. The most frequent were Carduelis cannabina, Lullula arborea, Alectoris rufa, Oenanthe hispanica and Emberiza cia, but […]
Factors influencing Willow Tit Poecile montanus site occupancy: a comparison of abandoned and occupied woods
Willow Tit (Parus montanus) Science Article 4 abstract The British Willow Tit Poecile montanus kleinschmidti underwent a decline of 85% between 1970 and 2003. The cause of this decline is unknown. However, several hypotheses have been put forward to account for it: competition from other tit species, predation by Great Spotted Woodpeckers Dendrocopos major and […]
Growth and size of Willow Tit Parus montanus under different environmental conditions
Willow Tit (Parus montanus) Science Article 1 abstract This six years study focuses on the effect of environmental factors on Willow Tit (Parus montanus) nestling growth . For each brood, nestling growth during the growth period (day 1-12) was related to the amount of food and temperature du ring this peri od as well as […]
Intraspecific variation in sperm length in two passerine species, the Bluethroat Luscinia svecica and the Willow Warbler Phylloscopus trochilus.
Willow Warbler (Phylloscopus trochilus) Science Article 3 abstract Sperm cells are highly diversified in birds and considerable research effort has focused on variation in sperm morphology between species. However, surprisingly little is known about intraspecific variation in sperm morphology in birds. We analyzed between- and within-male variation in total sperm length in two passerine species, […]
Spring passage of Willow Warbler Phylloscopus trochilusacross the western Mediterranean:comparing islands with the mainland
Willow Warbler (Phylloscopus trochilus) Science Article 4 abstract Spring migration of Willow Warbler Phylloscopus trochilus over the western Mediterranean was studied using observations collected at a ringing station on the mainland of Spain (Aiguamolls de l’Emporda), and at an island station (Cabrera, one of the Balearics). During the years 1993-2001, birds were caught and measured […]