Category: Passeriformes

Stabilising selection on wing length in reed warblers Acrocephalus scirpaceus

Acrocephalidae, Passeriformes

Reed-Warbler (Acrocephalus scirpaceus) Science Article 6 abstract The size of an animal is of utmost importance for its overall success and each species is thought to have its own optimal size. If this is true, size traits ought to be under stabilising selection unless the animal is living in a highly unstable environment. Wing length […]

Migration routes of North European Reed Warblers Acrocephalusscirpaceus

Acrocephalidae, Passeriformes

Reed-Warbler (Acrocephalus scirpaceus) Science Article 5 abstract Migration routes of expanding North European Reed Warbler populations were investigated by means of more than 2500 recoveries of birds ringed in Norway, Sweden and Finland. We found different autumn directions: from Norway SSW 195 deg -200 deg , from Sweden SSW-SW 211 deg -216 deg , and […]

Gap crossing decisions by reed warblers (Acrocephalus scirpaceus)in agricultural landscapes

Acrocephalidae, Passeriformes

Reed-Warbler (Acrocephalus scirpaceus) Science Article 3 abstract To meet the need for research on the requirements for corridors for marshland birds, this study set out toquantify gap crossing decisions made by reed warblers moving through the landscape. In three experiments,reed warblers were released into landscape situations with di?erent gap sizes and their movement towardsreed patches […]

The decline of the Ring Ouzel Turdus torquatus in Britain: evidence from bird observatory data

Passeriformes, Turdidae

Ring Ouzel (Turdus torquatus) Science Article 1 abstract Analysis of British and Irish bird observatory data from 1970-1998 shows that the number of Ring Ouzel Turdus torquatus bird days has declined significantly in spring at western observatories through which British-breeding birds pass, but not at east coast observatories through which Fennoscandian breeders pass. The extent […]

Some factors affecting foraging and habitat of Ring OuzelsTurdus torquatus wintering in the Atlas Mountains of Morocco

Passeriformes, Turdidae

Ring Ouzel (Turdus torquatus) Science Article 3 abstract This study aimed to shed light on the role of juniper berries as the principal foodsource for Ring Ouzels Turdus torquatus wintering in Morocco’s Atlas Mountains. Of the twojuniper species surveyed, Prickly Juniper Juniperus oxycedrus was the most widespread, butoccurred at low densities in other types of […]

Migration and wintering of Reed Buntings (Emberiza schoeniclus) in Spain.

Emberizidae, Passeriformes

Reed Bunting (Emberiza schoeniclus) Science Article 2 abstract The migration and wintering patterns in Spain of Reed Buntings were described from ring-recovery data for 451 birds. Differential migration according to the age and sex of birds was also analyzed, paying special attention to latitudinal differences. Recoveries of Reed Buntings in Spain occur mainly on the […]

Reed bunting females increase fitness throughextra-pair mating with genetically dissimilar males

Emberizidae, Passeriformes

Reed Bunting (Emberiza schoeniclus) Science Article 7 abstract Females of many socially monogamous species accept or even actively seek copulations outside the socialpair bond. As females cannot increase the number of offspring with promiscuous behaviour, the questionarises why they engage in extra-pair mating. Stefan M. Suter et al, Proc. R. Soc. B, 2007 Download article […]

Older male reed buntings are more successful at gainingextrapair fertilizations

Emberizidae, Passeriformes

Reed Bunting (Emberiza schoeniclus) Science Article 8 abstract The importance of extrapair paternity (EPP) as an aspect of mixed reproductive strategies is currently thefocus of many studies. Since females have at least some control over the occurrence of inseminations, theyare expected to engage in extrapair copulations only if they benefit, for instance through gaining highqualityor […]