Batch location: Shisr fields.
Batch location: Ayn Tabraq plains
Female. Batch location: Khatmat Milahah.
Great Crested Tern (Thalasseus bergii); Adult, Gender Unknown, Non-breeding Plumage; Sera Park--Qurayyat, Muscat, Oman.
Two individuals calling: one making long, plaintive calls at regular 6-second intervals, the other occasionally breaking out in a "cackle" (heard at 10 secs in this audio)
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