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Blå Kærhøg (Circus cyaneus) Hen Harrier -
Sjældenhed: Sjælden
Stemmer kan høres her (eksternt link)
2009-05-29
Fotograf: Arie Ouwerkerk - Se profil

Titel: eye contact!

Beskrivelse: The Northern Harrier decreased alarming fast on the island as a breeding bird. In the early ninetees c.40 pairs were breeding, the last years these numbers were less than 10.

Uploadet 2009-05-31 Publiceret 2009-05-31 Circus cyaneus Northern Harrier
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Kommentarer
Tommy Kaae
23. feb. 2010 kl. 18:47
Eyes of a killer .........;-)
Peter Sunesen
23. feb. 2010 kl. 18:54
Excellent! Arie, do you know the reason(s) for the decline. I guess it's not illegal killing as on the British Isles....disturbance....dogs? Peter
Arie Ouwerkerk
28. feb. 2010 kl. 15:00
The decline on the island is a combination of several factors. The most important are: - change of habitat, the dunes becomes more vegetated with bushes and trees makes it more suitable for the stronger Marsh Harrier - because of the change of habitat the total number of Rabbits drops sharply the last years. Young Rabbits are a very important part of the diet. - lack of males. For unknow reasons (illegal killing on the wintergrounds?) there are to less males when you compare the number with the females present.

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