Détail de l'auteur
Documents disponibles écrits par cet auteur (3)
Ajouter le résultat dans votre panier Affiner la recherche
Article
H. Siitari, Auteur ; J. Viitala, AuteurIn addition to wavelengths visible to humans (400-700 nm), many birds are able to detect near ultraviolet light (320-400 nm). Most studies of ultraviolet (UV) vision in birds have concentrated on the importance of
Article
M. Koivula, Auteur ; J. Viitala, AuteurzeVoles scent mark their territories with urine and faeces that are visible in ultraviolet (UV) light. Rough-legged Buzzards Buteo lagopus feed mainly on votes. We performed a field experiment in northern Finland to test whether buzzards are att[...]
Article
R. Probst, Auteur ; M. Pavlicev, Auteur ; J. Viitala, AuteurDiurnal raptors have been shown to use ultraviolet vision and UV-reflecting vole scent marks to find suitable hunting areas. We studied if a passerine species, the great grey shrike Lanius excubitor that uses votes as its primary food, may also [...]
