La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	New research on Palearctic crane species
Auteurs :	Sergej W. Winter, Auteur ; Pjotr I. Gorlov, Auteur ; Yurij A. Andryushchenko, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (120(5-6) 1999)
Article en page(s) :	367-376
Résumé :	The biology of several crane species was studied for 20 years by the Asow-Black Sea Ornithological Station. The following results were obtained: 1. Activity budgets of Hooded Crane Grus monacha differed between situations of undisturbed and disturbed incubation as a result of observer presence. Demoiselle, Eurasian and Red-Crowned Cranes show similar reactions to a close observer. 2. The connection between hatching regime and rain of different intensity for Demoiselle, Eurasian, Hooded and Red-Crowned Cranes was documented. In rain, adults reduced the frequency of egg turning by a factor of 2.5 and incubation change-over was half as frequent. 3. Reproduction of the Eurasian Crane Grus grus (100 nests, 187 eggs) was studied for six seasons near the southern border of its range (East-Ukraine). There was a negative correlation between median laying date and average temperatures during the pre-nesting period (March); r = - 0.93, p

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...