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Helang sawah kelabu PembiakanBurung Lang Sayap Hitam mampu menghasilkan 4-6 telur.
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Helang sawah kelabu PembiakanBerkaitan
Helang Helang Merah Helang laut Sulaiman Helang berkepala dua Helang (buruj) Helang sawah kelabu Helang Botak Helang (jata) Helang sewah semu Helang SalahuddinRujukan
WikiPedia: Helang sawah kelabu http://audubon-print.com/marsh-hawk.html http://www.sdakotabirds.com/species/northern_harri... http://www.birds.cornell.edu/AllAboutBirds/BirdGui... http://www.wildlife.gov.my/printed_material/kbdAvi... http://www.rspb.org.uk/action/species/casestudies/... http://www.rspb.org.uk/birds/guide/h/henharrier/in... https://web.archive.org/web/20070930204608/http://... https://web.archive.org/web/20090107084019/http://...