Gerard Manley Hopkins has been excluded from the OCR GCSE English Literature list. Happily, Hopkins wrote brilliantly about nature and so is a good candidate to be part of the new natural history GCSE syllabus. One possible choice would seem to be:
To Christ our Lord
As will be obvious, a windhover is a kestrel, and where I live the name is still in use: such an expressively accurate description of the bird and its flight. I read that Hopkins said that Windhover was the best thing he'd ever written. I'm not surprised; as a piece of nature poetry it is wonderfully inventive and is as much about the human appreciation of the bird as of the bird itself. It's also a bit "difficult" of course, even though it rhymes.