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Determining air cell location and embryo development in opaque shelled eggs

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A novel method for determining air cell location, embryo development, and eggshell defects in opaque thickshelled eggs was tested. Results demonstrated that a camcorder with IR "Night Shot" function performed significantly better (P < 0.05) than unaided visual determination of air cell location in Emu eggs. In addition, the Mini DVC camcorder unit was as accurate as the heavier, non-portable, and more expensive traditional IR candling units. Commercial ratite producers, waterfowl biologists, and others working with opaque thickshelled eggs may benefit from this research.


Document Type: Research Article


Publication date: 2012-06-01

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  • Avian Biology Research provides a forum for the publication of research in every field of ornithology. It covers all aspects of pure and applied ornithology for wild or captive species as well as research that does not readily fit within the publication objectives of other ornithological journals. By considering a wide range of research fields for publication, Avian Biology Research provides a forum for people working in every field of ornithology. The journal also includes sections on avian news, conference diary and book reviews.

    Editor-in-Chief: Charles Deeming Editors: Tom Pike; Dale Sandercock; Claudia Wascher; Colin Butter
    Production Editor: Claire Pike

    Cover image: A male Lesser Kestrel (Falco naumanni) with a bush cricket as prey, returning to the nest to feed its young. Photo by Anastasios Bounas

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