La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Characteristics of tree hollows used by Australian birds and bats
Auteurs :	Ross L. Goldingay, Auteur
Type de document :	Article
Dans :	Wildlife Research (36(5) 2009)
Article en page(s) :	394-409
Langues:	Anglais
Résumé :	Many hundreds of species of wildlife worldwide are dependent on tree hollows (cavities) for their survival. I reviewed the published literature for hollow-using Australian birds and microbats to document their tree-hollow requirements and to guide future research and management. Such information is vital to the conservation of these species. The hollow requirements of only 35 of 114 hollow-using bird species and 15 of 42 hollow-using microbat species were documented in some detail. This overall paucity of information limits the ability to manage for the future requirements of species. However, some generalisations can guide management until further studies are conducted. Most species used a variety of available tree species, and the extensive use of dead trees probably reflects the high likelihood of these trees containing hollows. Birds (other than large parrots) and bats chose hollow entrances of a size close to body width. Large parrots require large hollows, with a preference for large vertical spouts and trunk hollows. Few birds or bats demonstrated an absolute requirement for high (>10 m) tree hollows, with most (70%) using some hollows with entrances

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