La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Ground song of the skylark Alauda arvensis: Frequency, temporal distribution and habitat dependence
Auteurs :	Piotr Tryjanowski, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (121(1) 2000)
Article en page(s) :	49-50
Résumé :	Skylarks are morphologically well adapted for endurance-type flight song which mainly serves the marking of territory. The study analyzes the temporal and spatial distribution of non-aerial ("ground") song (on the ground and on perches) in an agricultural environment in Poland. Only 2.6 % of song activity was non-aerial; seasonally its average occurrence was markedly later than that of flight song. In certain habitats (small fields, set-aside areas) ground song was more frequent than expected according to their percentage of the total area screened. Compared to flight song, ground song is softer and shorter, and seems to serve communication between partners or generations rather than the marking of territory.

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