La Tour du Valat

Article

Birds killed on roads in Southern Jutland, Denmark, 2001-2008

Johannes Erritzoe, Auteur ; Helga Erritzoe, Auteur ; Marius Norgaard, Auteur

Dans Dansk Ornitologisk Forenings Tidsskrift (112(4) 2018)

Seven and a half years of monitoring bird traffic casualties by walking and cycling an accumulated 14 750 km of road in a small village and surrounding arable land in the south of Jutland produced a total of 612 roadkilled birds belonging to 42 [...]

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Article

Causes of mortality in the Long-eared Owl Asio otus

Johannes Erritzoe, Auteur

Dans Dansk Ornitologisk Forenings Tidsskrift (93(3) 1999)

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Article

Sex differences in winter distribution of Long-eared Owls (Asio otus) in Denmark and neighbouring countries

Johannes Erritzoe, Auteur ; Richard Fuller, Auteur

Dans Vogelwarte (40(1-2) Oct., 1999)

Evidence presented here indicates that in western Denmark, the sex-ratio of Long-eared Owls (Asio otus) during the winter months is significantly biased towards females. Museum collections revealed the same phenomenon in the Netherlands and nort[...]

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