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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)

  • above dark brown, pale spots
  • below cream or buff with brown spots
  • wing bars buff
  • facial disc white
  • mark in front of each eye brown
  • iris brown
  • bill pale brown
  • legs very long, feathered
  • feet grey


India to southeast Asia, Philippines, and Australia.


Until recently, the Eastern Grass Owl was considered to be conspecific with African Grass Owl as "Grass Owl". Reference [4] notes that the morphological and genetic differences between these species are minor.


Clements recognises the following subspecies [1]:


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, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
  2. Owlpages
  3. Handbook of the Birds of the World Alive (retrieved Nov 2017)
  4. Eaton, JA, B van Balen, NW Brickle, FE Rheindt 2021. Birds of the Indonesian Archipelago (Greater Sundas and Wallacea), Second Edition. Lynx Editions. ISBN978-84-16728-44-2

Recommended Citation

External Links

GSearch checked for 2020 platform.1