Category: Strigiformes

Rediscovery of the Flores Scops Owl Otus alfredi on Flores, Lesser Sunda Islands, Indonesia, and reaffirmation of its specific status

Flores Scops Owl (Otus alfredi) Science Article 1 abstract The Flores Scops Owl Otus alfredi remained unreported for almost a century after its description in 1897, and skepticism developed regarding its validity as a species. In 1994 a fourth individual (a juvenile) was collected near the type locality, and an adult was independently mistnetted and […]

Identification, distribution and status of the Forest Owlet Athene (Heteroglaux) blewitti

Forest Owlet (Heteroglaux blewitti) Science Article 1 abstract Re-evaluation of specimen and literature evidence established that only seven study skins of the Forest Owlet Athene (Heteroglaux) brama were ever collected, and only between 1872 and 1884. Examination of all seven specimens elucidated numerous diagnostic characters as well as the localities at which the species was […]

Rediscovery, biology, vocalisations and taxonomy of fish owls in Turkey

Brown Fish Owl (Ketupa zeylonensis) Science Article 1 abstract In the Western Palearctic (WP) region, Brown Fish Owl Bubo zeylonensis is one of the rarest and least-known birds. The species? range is huge, from the Mediterranean east to Indochina, but it is probably only in India and Sri Lanka that it is regularly observed. In […]

Diet of breeding Tengmalm’s Owls Aegolius funereus: long-term changes and year-to-year variation under cyclic food conditions

Boreal Owl (aegolius funereus) Science Article 5 abstract The diet of breeding Tengmalm’s Owl , A. funereus was studied in the Kauhava region, west Finland, using two methods: identification of prey animals cached in the nest-holes(a total of 4366 prey items in 1973-86) and found in the pellets and orher prey remains colletred from de […]

Tawny Owl’s territory occupancy in Eastern Latvia.

Tawny Owl (Strix aluco) Science Article 2 abstract The Tawny Owl’s territory occupancy was studied on twoplots in Eastern Latvia. By mapping Tawny Owl calling sites and by usingactivity stimulation, the spacing of pairs and solitary individuals was tracedover 6 years. The Tawny Owl population increased during the study. Ofdetected resident owls, 11% were single […]

Wood quality and the Tawny Owl Strix aluco in different foresttypes of central Italy

Tawny Owl (Strix aluco) Science Article 3 abstract We correlated breeding density and proportion of wooded area per territory of Tawny Owl Strix aluco measured in four deciduous forest types with forest elevation and songbird abundance, both regarded as estimators of forest productivity. The proportion of wooded area was positively correlated to forest elevation, being […]

Possible first record of double brooding in the tawny owl Strix aluco

Tawny Owl (Strix aluco) Science Article 1 abstract […].A Tawny Owl population in Bizkaia was monitored between 1992 and 2003, producing a description of its breeding ecology (Zuberogoitia & Campos, 1998; Zuberogoitia & Martinez, 2000; Zuberogoitia, 2002). During the course of the study, one possible case of a second brood was registered. 1,700 Tawny Owl […]

Analysis of genetic parentage in the tawny owl ( Strix aluco ) reveals extra-pair paternity is low

Tawny Owl (Strix aluco) Science Article 5 abstract We have investigated genetic parentage in a Swiss population of tawny owls (Strix aluco). To this end, we performed genetic analysis for six polymorphic loci of 49 avian microsatellite loci tested for cross-species amplification. We found one extra-pair young out of 137 (0.7%) nestlings in 37 families […]

Living at the limit: Ecology and behaviour of Tawny Owls Strix aluco in a northern edge population in central Norway.

Tawny Owl (Strix aluco) Science Article 6 abstract The Tawny Owl Strix aluco was studied at the northernmost limit of its geographical range (63degree20’N) in order to investigate how this extremely residential species has adapted to the marginal conditions of its northern outpost. The presence of nemoral forest vegetation was crucial for the occurrence of […]