Last week I was assisting the RSPB Stone Curlew team with trying to locate and catch chicks.
There is a breeding population of about 300 pairs in the UK (two thirds of which breed in Norfolk and Suffolk). The nest is a shallow scrape in the ground with usually 2-3 eggs laid in it.
The chicks are captured, weighed, various measurements taken and then given a unique combination of colour rings on the legs, which allows individuals to be identified at some distance with binoculars of a telescope.
You can find out more information at the links below;