PRODUCTIVITY, FOOD HABITS, AND ASSOCIATED VARIABLES OF BARN OWLS UTILIZING NEST BOXES IN NORTH CENTRAL UTAH

PRODUCTIVITY, FOOD HABITS, AND ASSOCIATED VARIABLES OF BARN OWLS UTILIZING NEST BOXES IN NORTH CENTRAL UTAH

Productivity and food habits of the Barn Owl (Tyto alba) utilizing nest boxes in Juab, Utah, and Salt Lake counties, Utah, during 1979-1984 were examined. Average clutch size was 5.8 eggs for the 6-yr period; mean number fledged was 3.9 young per successful nest. While severe weather during the 1981...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The Great Basin naturalist 1996-01, Vol.56 (1), p.73-84
Hauptverfasser: Looman, Sandra J., Shirley, Dennis L., White, Clayton M.
Format: Artikel
Sprache:eng
Schlagworte:
Animal nesting
Barns
Bird nesting
Birds of prey
Clutch size
Feeding habits
Nesting sites
Owls
Productivity
Seasons
Tyto alba
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Productivity and food habits of the Barn Owl (Tyto alba) utilizing nest boxes in Juab, Utah, and Salt Lake counties, Utah, during 1979-1984 were examined. Average clutch size was 5.8 eggs for the 6-yr period; mean number fledged was 3.9 young per successful nest. While severe weather during the 1981-82 winter did not result in a significant decrease in productivity during the 1982 breeding season, it may have resulted in a significant overproduction of female young. Barn Owls in north central Utah fed almost exclusively on mammalian species, particularly Microtus spp. Differences in clutch size between areas and years may be a response to availability as well as abundance of prey.
ISSN:0017-3614