Birds egg, Eurasian hobby, Falco subbuteo Linnaeus, 1758 Subsp subbuteo, in clutch of 3, found at Robin Hood's Ball, Salisbury Plain, Larkhill, Wiltshire, England, 1921

Birds egg, Eurasian hobby, Falco subbuteo Linnaeus, 1758 Subsp subbuteo, in clutch of 3, found at Robin Hood's Ball, Salisbury Plain, Larkhill, Wiltshire, England, 1921
Birds egg, Eurasian hobby, Falco subbuteo Linnaeus, 1758 Subsp subbuteo, in clutch of 3, found at Robin Hood's Ball, Salisbury Plain, Larkhill, Wiltshire,  England, 1921