Ringing & Migration · 1990 · 10 citations · 2 references
Life SciencesEcologyZoologyOrnithologyPopulation EcologyBird MigrationBird Population BiologyMigration EcologySex DifferencesSex RatioSex StructureMale-to-female RatioMigration Effects On Sex RatioPopulation Dynamics Of MigrantsPopulation Sex RatioSex Differential MigrationSex Ratio Data AnalysisSex Ratio DeterminationSex-biased Dispersal
A sample of migrant Long‐eared Owls trapped at Fair Isle, Shetland, comprised significantly more females than males. The origin of these migrants is thought to be Fenno‐Scandia and possible reasons for the imbalanced sex ratio are discussed.
2
Birds of the Western Palearctic
C. M. Perrins · Nature · 1978 · 2.8K citations · Full text
Life Sciences, Ecology, Zoology +12
Tom J. Cade, Ian Newton · Journal of Wildlife Management · 1980 · 652 citations
Life Sciences, Biology, Ecology +12