The elf owl is the world’s smallest owl, weighing as little as 35 grams (1.2 ounces) and measuring just 12 centimeters (4.7 inches) in length. Close behind are the long-whiskered owlet and Tamaulipas pygmy owl, two elusive forest species with males as small as 13 centimeters (5.1 inches) and just over 50 grams (1.8 ounces) […]
The Siau scops owl and the Pernambuco pygmy owl are currently the rarest owls in the world, with likely fewer than 50 individuals remaining in the wild. Their populations are so critically low that they may soon vanish entirely unless immediate conservation action is taken. Close behind them are the Annobon scops owl, Seychelles scops […]
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 […]
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 […]
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 […]
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 (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 […]
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 […]
Tawny Owl (Strix aluco) Science Article 4 abstract The population of Tawny Owls Strix aluco breeding in urban Rome, Italy, was studied from 1992 to 2001. Yearly density (range: 0.9-1.1 territories km-2) was rather stable compared with data from central Europe, likely due to mild weather conditions and abundant food supply. The rate of territory […]
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 […]