See Trent Pirates 1 Heron and Bluebirds Ahoy! for more details of the series
This cache is in a car park where there is an entrance into the Skylarks' Nature reserve. There are several waypointed walks of varying lengths with particular focus on birds, you could go today or maybe another time? Anyway the cache is close by. Please make sure you return the cache as found and that the hint item is just on show