Yellow-browed Warbler (Phylloscopus inornatus) Science Article 2 abstract This paper deals with the spatial and temporal pattern of occurrence of Yellow-browed Warbler in Germany. The first record goes back to 1845, when a female was trapped in late October near Berlin Thorsten Kruger und Jochen Dierschke, VOGELWELT 125: 41 – 52 (2004) Download article download […]
Tag: all of Phylloscopus
Hidden leks in the Yellow-browed Warbler Phylloscopus inornatus? -Investigations from the Khan Khentey reserve (Mongolia)
Yellow-browed Warbler (Phylloscopus inornatus) Science Article 1 abstract The breeding biology of the Yellow-browed Warbler Phylloscopus inornatus islargely unknown. Recently the species was found to breed in clusters and somehypotheses on the function of aggregated breeding sites have been proposed.To obtain new insights, two clusters of Yellow-browed Warblers were observedfrom May to July 2003 in […]
Genetically confirmed interbreeding between western Bonelli’s warbler ( Phylloscopus bonelli ) and wood warbler ( P. sibilatrix )
Wood Warbler (Phylloscopus sibilatrix) Science Article 1 abstract During May and June 2003, a mixed breeding pair consisting of a male western Bonelli’s warbler (Phylloscopus bonelli) and a female wood warbler (P. sibilatrix) successfully raised six young in a broad-leafed forest near Junkerath, western Germany, an area far outside the regular breeding range of P. […]
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 […]
Niche partitioning of two Palearctic passerinemigrants with Afrotropical residents in theirWest African winter quarters
Willow Warbler (Phylloscopus trochilus) Science Article 2 abstract In bird migration systems, the question of coexistence and competition of migrants with residents in the nonbreeding season andtheir role in shaping the evolution of present avian communities is much debated. However, conclusions are often drawn ina speculative way. In the Palearctic-African bird migration system, many studies […]
Progress with the statistical analysis of primary molt
Willow Warbler (Phylloscopus trochilus) Science Article 1 abstract This paper considers two extensions to the statistical analysis of primary molt. The first extension relates to thedevelopment of statistical models that allow the simultaneous estimation of molt parameters for diverse groups of birds.Parameter estimation uses the method of maximum likelihood and the EM algorithm. The likelihood […]
On the taxonomic status and denomination ofthe Iberian Chiffchaffs
Iberian Chiffchaff (Phylloscopus ibericus) Science Article 1 abstract We carried out a Principal Component Analysis on 196 Iberian and Common Chiffchaffsof both sexes (live and collection specimens), characterized by seven variables derived fromwing, tarsus and bill measures. This method, complemented by colour comparison of thetaxa, led us to the following conclusions. (1)Phyllopneuste brehmii, Homeyer, 1871, […]
Polygyny in the dusky warbler, Phylloscopus fuscatus: theimportance of female qualities
Dusky Warbler (Phylloscopus fuscatus) Science Article 1 abstract The polygyny threshold model states that secondary females gain benefits from high territory quality thatoutweigh the costs of sharing a male. We aimed to test this prediction using the dusky warbler as a modelspecies. We first showed that neither the shifted sex ratio hypothesis nor the no-cost […]
WHY MATED DUSKYWARBLERS SING SO MUCH: TERRITORY GUARDING AND MALE QUALITY ANNOUNCEMENT
Dusky Warbler (Phylloscopus fuscatus) Science Article 2 abstract The fertility announcement hypothesis states that males sing most intensively during theperiod of female fertility in order to assure their paternity, as females would prefer to sexuallymate with males singing at a high rate. The dusky warbler (Phylloscopus fuscatus) is one ofthe species in which singing intensity […]