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Article
P. N. Ferns, Auteur ; J. P. Reed, Auteur ; E. D. Gregg, Auteur ; C. O'Hara, Auteur ; A. Lang, Auteur ; G. R. Sinkowski, AuteurDans Wildfowl (55 2005)Male Common Shelducks Tadorna tadorna with Large bill knobs were more effective at defending spring feeding areas in the Severn Estuary, southwest England, against other males than those with small bill knobs. Their female partners were conseque[...]
Article
A. Lang, Auteur ; J. M. Black, AuteurDans Wildfowl (52 2001)The functional response and variation in foraging efficiency of captive Barnacle Geese was measured on pasture sward. Intake rates were calculated for a range of grass sward heights using direct measurements of peck rate, bite height and number [...]
