The earlier post on Birdstrike omitted a detail. The body of water pictured at Blackhill Quarry is actually called "Seagull Pond" by quarry staff, for obvious reason. The quarry is also known by local bird-spotters, particularly for breeds of gulls. The gulls in the earlier photograph have now moved - and can be found at another lagoon in the quarry, as shown.
We mention this in case Aggregate Industries or DCC are minded to say at some future point that bodies of water in quarries are cold, nutrient poor, unattractive to bird life, and would present no risk whatsoever to aircraft flying low over Straitgate on their landing approach to Exeter Airport.