Cliff face with a colony of Sand Martins (Riparia riparia) dug nesting holes. Happisburgh, North Norfolk. East Anglia.

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Sand Martin (Riparia riparia), excavated nesting holes. Continuous collapsing of cliff face from tidal erosion, forces returning migrant birds to re-dig and replace colony site on an almost annual basis. Happisburgh, North Norfolk. East Anglia.

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Size: 5616px × 3744px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No

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