BUKER JB, WIT JN DE & ZUILEN WA VAN (1986) Short contributions: Egg of Mallard Anas platyrhynchos hatched by Long-eared Owl Asio otus. LIMOSA 59 (1): 40-40.

In an artificial nest a Long-eared Owl was found breeding on 12 eggs of a Mallard. At least one chick hatched Mallard Anas platyrhynchos Long-eared Owl Asio otus

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