Tawny Owl (Strix aluco) Science Article 2 abstract The Tawny Owl’s territory occupancy was studied on twoplots in Eastern Latvia. By mapping Tawny Owl calling sites and by usingactivity stimulation, the spacing of pairs and solitary individuals was tracedover 6 years. The Tawny Owl population increased during the study. Ofdetected resident owls, 11% were single […]
Breeding of the tawny owl Strix aluco in Finland: responses of a southern colonist to the highly variable environment of the north
Tawny Owl (Strix aluco) Science Article 7 abstract Large-scale patterns and variations in the occurrence and breeding of the Tawny Owl Strix aluco in Finland was studied in relation to the availability of small voles and winter ing birds as well as to general weather conditions of the preceding winter. In 1986-2000, pronounced three-year cycles […]
Living at the limit: Ecology and behaviour of Tawny Owls Strix aluco in a northern edge population in central Norway.
Tawny Owl (Strix aluco) Science Article 6 abstract The Tawny Owl Strix aluco was studied at the northernmost limit of its geographical range (63degree20’N) in order to investigate how this extremely residential species has adapted to the marginal conditions of its northern outpost. The presence of nemoral forest vegetation was crucial for the occurrence of […]
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 […]
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 […]
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 […]
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 […]
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. […]
NORTH ATLANTIC POSSIBLE, PROBABLE AND REJECTED RECORDS OFSWINHOE’S STORM-PETREL AND EXTRALIMITAL BULWER’S PETREL
Swinhoes Storm-petrel (Oceanodroma monorhis) Science Article 2 abstract Records of Swinhoe’s Storm-petrel and extralimital records of Bulwer’s Petrel were researchedand are presented in the article
Vocal Behavior of Swinhoe’s Storm-Petrel (Oceanodroma rnonorhis)
Swinhoes Storm-petrel (Oceanodroma monorhis) Science Article 1 abstract Swinhoe’s Storm-Petrel (Oceanodromma onorhis)is a nocturnal seabird related closely to Leach’s Storm-Petrel (Oceanodromale ucorhoa).S winhoe’s Storm-Petrel breeds in the northwestern Pacific Ocean on small islands around the Japan Sea or off Korea (Palmer1962, Cramp and Simmons 1977, Won and Lee 1986) MIKI TAOKA et al, Auk, Vol. […]