Diet composition influences annual breeding success of Montagu's Harriers Circus pygargus feeding on diverse prey: Capsule Diet diversity was positively related to nest failure in Montagu's Harriers.

By Arroyo Beatriz E.   Garcia Jesús T.  

Bird Study, Vol. 53, Iss. 1, 2006-03 ,pp. : 73-78

Taylor & Francis Ltd

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Parental differences in brood provisioning by Hen Harriers Circus cyaneus: Capsule Females varied their provisioning patterns according to brood age and brood size, whereas males did not.

By Leckie Fiona M.   Arroyo Beatriz E.   Thirgood Simon J.   Redpath Stephen M.  

Bird Study, Vol. 55, Iss. 2, 2008-07 ,pp. : 209-215

Taylor & Francis Ltd

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Status of the Hen Harrier Circus cyaneus in the UK and Isle of Man in 2004, and a comparison with the 1988/89 and 1998 surveys: Capsule The population of breeding Hen Harriers in the UK and Isle of Man increased between 1998 and 2004, although country and regional trends differed.

By Sim Innes M.W.   Dillon Ian A.   Eaton Mark A.   Etheridge Brian   Lindley Patrick   Riley Helen   Saunders Richard   Sharpe Chris   Tickner Matthew  

Bird Study, Vol. 54, Iss. 2, 2007-07 ,pp. : 256-267

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Is female investment in defence correlated with breeding success in Hen Harriers Circus cyaneus?: The intensity of parental defence, irrespective of the value of offspring, may be one of the proximate causes of breeding success, reflecting the quality of breeders.

By García Jesús T.  

Bird Study, Vol. 50, Iss. 2, 2003-07 ,pp. : 142-145

Taylor & Francis Ltd

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Food transfer in Montagu's Harrier Circus pygargus during courtship

By Wiącek Jarosław  

Acta Ornithologica, Vol. 41, Iss. 1, 2006-06 ,pp. : 88-91

Museum and Institute of Zoology, Polish Academy of Sciences

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