Tawny Pipit (Anthus campestris) Science Article 2 abstract The probability of predation was unrelated to outer nest diameter nor was there any relationship between internal diameter and the presence of unhatched eggs. Wall thickness and nest mass declined as the season progressed but there was no relationship between these variables and the mean environmental temperature […]
Category: Eurasia
Het verdwijnen van de Duinpieper
Tawny Pipit (Anthus campestris) Science Article 1 abstract Tot in de 19e eeuw kwamen in Nederland grote stuifzandgebieden voor. Met name op de Veluwe is in historische tijden verbitterd strijd geleverd tegen de uitbreiding van het zand, dat vrij spel kreeg door ontbossing en intensieve beweiding. Ook nu behoren onze zandverstuivingen tot de grootste van […]
Migration and morphometrics of Temminck’s StintCalidris temminckii at Ottenby, southern Sweden
Temmincks Stint (Calidris temminckii) Science Article 1 abstract Data are reported from 55 years of ringing and observation on the migration of Temminck’s Stint Calidristemminckii at Ottenby Bird Observatory, Sweden. Numbers ringed have declined since the 1940s due tohigh numbers caught in 1948 and 1949. Thereafter there is no clear trend. The overall autumn migrationdirection […]
Seasonal and interannual variability in laying date, clutch size, egg volume and hatching asynchrony of four lark species in Mediterranean Spain
Thekla Lark (Galerida theklae) Science Article 2 abstract To describe the variation in laying date, clutch size, egg volume and hatching asynchrony of four lark species (Skylark Alauda arvensis, Short-toed Lark Calandrella brachydactyla, Thekla Lark Galerida theklae and Lesser Short-toed Lark Calandrella rufescens) and at two different time scales: between years (large-scale variation), and within […]
Parental body mass changes during the nestingstage in two Lark species in a semi-arid habitat
Thekla Lark (Galerida theklae) Science Article 1 abstract Parental body mass changes during the nesting period were analysed for Thekla Larks,Galerida theklae, and Lesser Short-toed Larks, Calandrella rufescens. Body mass of femaleThekla Larks declines from the start of incubation until the chicks fledge; laying date,interpreted as the number of renesting attempts, also has a negative […]
Will the real Sykes’s Warbler please stand up? Breeding data support specific status forHippolais rama and H. caligata, with comments on the Arabian population of
Sykess Warbler (Iduna rama) Science Article 1 abstract In early-January 2000, one of us (GMK) received a communication from Michael Walters, the former Curator of Eggs at the Natural History Museum (Tring), concerning a recent short note by Castell (1999, see below) within these pages, in which a nest, apparently of Hippolais rama, was depicted. […]
Serological survey of viral pathogens in bean and white-fronted geese from Germany
Taiga Bean Goose (Anser fabalis fabalis) Science Article 1 abstract Sera from wild geese were tested for antibodies to selected viral pathogens at a resting site for wild waterfowl in Germany. Serum samples from both bean geese (Anser fabalis) and white-fronted geese (Anser albifrons) collected in October 1991 were examined using serological methods licensed for […]
Wood quality and the Tawny Owl Strix aluco in different foresttypes of central Italy
Tawny Owl (Strix aluco) Science Article 4 abstract The population of Tawny Owls Strix aluco breeding in urban Rome, Italy, was studied from 1992 to 2001. Yearly density (range: 0.9-1.1 territories km-2) was rather stable compared with data from central Europe, likely due to mild weather conditions and abundant food supply. The rate of territory […]
Possible first record of double brooding in the tawny owl Strix aluco
Tawny Owl (Strix aluco) Science Article 1 abstract […].A Tawny Owl population in Bizkaia was monitored between 1992 and 2003, producing a description of its breeding ecology (Zuberogoitia & Campos, 1998; Zuberogoitia & Martinez, 2000; Zuberogoitia, 2002). During the course of the study, one possible case of a second brood was registered. 1,700 Tawny Owl […]
Analysis of genetic parentage in the tawny owl ( Strix aluco ) reveals extra-pair paternity is low
Tawny Owl (Strix aluco) Science Article 5 abstract We have investigated genetic parentage in a Swiss population of tawny owls (Strix aluco). To this end, we performed genetic analysis for six polymorphic loci of 49 avian microsatellite loci tested for cross-species amplification. We found one extra-pair young out of 137 (0.7%) nestlings in 37 families […]