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A grey heron seen flying despite a crossbow bolt injury has been put down after vets found part of its spine had been dislodged.

The lagoon is an important stop for migratory birds, particularly the Cetti’s warbler, grey heron, eastern imperial eagle and the flamingo, who all lay their eggs in Küçükçekmece.

Among them are the common crane, grey heron, greater flamingo, osprey, white stork, great white pelican and black kite.

They used a drone for the first time to count grey heron nests this year and found 24 rather than the 16 of last year.

Grey heron in delta-winged sunbathing posture.