Ketupa zeylonensis

The Brown Fish-owl is classified as Regionally Extinct (RE). It became extinct in the 1970s and since then no individuals have been observed. In the previous edition of the Red Book (2002), it was classified as Regionally Extinct (RE).

Habitats	Wetland Thickets, Perennial Stream
Presence In Israel	Resident
Nesting In Israel	Past Breeder
Migration Types	Resident
Zoography Zones	Mediterranean
Landscape Formations	Swamps, Wetland Thickets, Riparian, Wetlands
Vegetation Formations	Forest, Mediterranean Maquis, Wetland Thickets
Nest Locations	Tree, Cliffs
Diet Types	Fish
Foraging Grounds	Water
Body Sizes	Large (over 1000g)
Threat Factors	Direct Persecution, Wetland Drainage & Pollution

The Brown Fish-owl is a large owl resembling an eagle owl in its broad build and brown plumage. It inhabits wetland habitats and feeds mainly on fish it hunts in shallow swoops towards the water.

Until the early 20th century, the Brown Fish-owl was resident in the Galilee, the Golan Heights, the northern Jordan Valley and the Northern Valleys. The population was estimated at several tens of individuals at minimum. There is no data regarding its breeding biology in Israel, but the population was believed to be resident and breeding. The last observations were from Bet Zera and Hamat Gader in 1974-1975 (Paz 1986, Shirihai 1996).

The Brown Fish-owl has a broad distribution in Southeast Asia, but the western subspecies (K. z. semenowi) has a relictual fragmented distribution and in our region, it is only known from a number of sites in southern Turkey.

In the late 19th century and in the early 20th century the Brown Fish-owl was harmed by collection of numerous specimens for scientific collections. Most of the damage, however, resulted from wetland habitat modification and destruction in northern Israel, such as the drainage of the Hula Marshes, pumping of streams in the Galilee and the Golan Heights and diversion of springs to reservoirs.

The probability of the Brown Fish-owl returning to breed in this area naturally is very low, because the breeding population that occupied the area was at the western edge of its global range. Adjacent populations, e.g. Lebanon and Jordan, have also apparently become extinct (BirdLife 2017). The species is not recommended for reintroduction to nature in Israel at this stage, due to the small number of suitable sites for nesting and the current degraded state of the water sources in the Galilee and Golan streams.

• פז, ע. 1986. עופות. מתוך אלון, ע. (עורך), החי והצומח של ארץ ישראל. כרך 6. הוצאת משרד הביטחון, ישראל.

• Shirihai, H., 1996. The Birds of Israel. Academic Press, London.
• Symes, A. 2013. Species generation lengths. Unpublished, BirdLife International.
• Species page at Birdlife International