Status and migration of the Siender-billed Gull (Larus genei) in Bulgaria

NANKINOV D.N.

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Abstract:

The earliest Slender-billed Gulls arrive in Bulgaria after July 5. Some 72.70/0 migrate to the Mediterranean in August-October. A tiny number, 1.0 to 2.2% of the birds spend the winter and spring in Bulgaria. The Black Sea is the spring flight route. Nesting by the Slender-billed Gull may be expected in Lake Atanassovsko.