References
- Euring, Coordinating bird ringing throughout Europe, 2014, Euring Member Schemes. Available online at: http://www.euring.org/national-schemes/european-ringing-schemes (accessed 6 December 2015).
- Russian Raptor Research and Conservation Network, 2015, Forum. Available online at: http://rrrcn.ru/forum/viewtopic.php?f=4&t=259&sid=86a1dae7f2ac149e39378c8097dec43e&p=2736#p2736 (accessed 6 December 2015).
- Eriksen, J. and Victor, R., 2013, Oman Bird List (7th edition) (Muscat: Center for Environmental Studies and Research, Sultan Qaboos University).
- BirdLife International, 2015a, VU Eastern Imperial Eagle. Aquila heliaca. Fact Sheet. Available online at: http://www.birdlife.org/datazone/species/factsheet/22696048 (accessed 6 December 2015).
- BirdLife International, 2015b, EN Steppe Eagle. Aquila nipalensis. Fact Sheet. Available online at: http://www.birdlife.org/datazone/speciesfactsheet.php?id=3533 (accessed 6 December 2015).