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All Journal BIO PALEMBANICA
Henni Martini
Hutan Kita Institute (HAKI)
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Observation of A White-bellied Sea-Eagle Icthyophaga leucogaster (Accipitriformes: Accipitridae) Preying on A Jellyfish (Cnidaria: Medusozoa) Agus Prabowo; Henni Martini; Deni Mulyana; Reynaldi Sastra; Pormansyah; Muhammad Iqbal
BIO PALEMBANICA Vol 3 No 1 (2026): Bio Palembanica
Publisher : Lembaga Penelitian, Pengabdian Kepada Masyarakat dan Kepustakaan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/bio.v3i1.7040

Abstract

The White-bellied Sea-Eagle Icthyophaga leucogaster is a widespread Indo-Pacific raptor known for its predominantly piscivorous diet and opportunistic foraging behavior. Here, we report an unusual feeding observation of a juvenile I. leucogaster preying on a jellyfish at the mouth of the Sembilang River, South Sumatra, Indonesia, on 20 February 2018, at approximately 11:00 hrs. The eagle was observed lifting the jellyfish from the water surface and transporting it in its talons while in flight to a nearby perch. Jellyfish are rarely reported as prey for raptors and are generally regarded as having low nutritional value; however, their high visibility and ease of capture during periods of abundance may provide short-term energetic gains. This observation broadens current knowledge of the dietary range of I. leucogaster and underscores the species’ behavioral flexibility in exploiting unconventional prey resources.
Co-Authors Agus Prabowo Deni Mulyana Muhammad Iqbal Pormansyah Reynaldi Sastra