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Eastern Grass Owl - BirdForum Opus

Alternative names: Australasian Grass-Owl; Australian Grass-Owl

Photo by Romy Ocon
Candaba Swamp, Pampanga, Philippines, August 2005
Tyto longimembris


Nominate subspecies
Photo by Hans&Judy Beste
Julatten, Nth. Queensland, Australia

Male: 32-36cm (12½-14¼ in); Female: 35-38cm (13¾-15 in)

  • Dark brown above, pale spots
  • Cream or buff below with brown spots
  • Buff wing bars
  • White facial disc
  • Brown mark in front of each eye
  • Brown iris
  • Pale brown bill
  • Very long feathered legs
  • Grey feet


India to southeast Asia, Philippines, and Australia.


Until recently, the Eastern Grass Owl was considered to be part of African Grass Owl which at that time was known only as "Grass Owl".


There are 6 subspecies[1]:

  • T. l. longimembris:
  • T. l. chinensis:
  • South-eastern China (south-eastern Yunnan to Jiangsu) and Vietnam
  • T. l. pithecops:
  • T. l. amauronota:
  • T. l. baliem:
  • T. l. papuensis:
  • Montane grasslands of eastern New Guinea


Grasslands, canefields and paddy Fields.




Their diet consists almost entirely of rodents.


They are ground-nesters, building the platform nest from grass in dense tussocks of grass or sedges. The 3-8 dull white eggs are incubated for about 42 days. The young fledge at about 2 months.


  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Owlpages
  3. Handbook of the Birds of the World Alive (retrieved Nov 2017)

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