DO TOPOGRAPHICAL CONSTRAINTS AND SPACE AVAILABILITY INFLUENCE BIRDS’ RANGING BEHAVIOUR? THE ALPINE CHOUGH (. PYRRHOCORAX GRACULUS) AS A STUDY CASE
Antonio Rolando, Paola Laiolo & Andrea Conti*
Résumé
Summary
* Dipartimento di Biologia Animale e delTUomo, via Accademia Albertina 17, 10123 Torino,
Italy.
Rev. Écol. (Terre Vie), vol. 55, 2000.
383
