The RSPB has already used one to check whether a marsh harrier had laid eggs in its remote nest.

A great egret seizes a fish in a deeper channel, while a marsh harrier quarters the surrounding reed beds, hunting prey to feed its young.

Species on the marsh include marsh harriers, bitterns, avocets and spoonbills.

High-flying black kites and ground-skimming marsh harriers searched for dead or dying fish.

Mr. MacCulloch writes me word that a Marsh Harrier was killed in Herm in May, 1875.

Professor Ansted mentions the Marsh Harrier in his list, but marks it as only found in Guernsey.

Ospreys, white tailed eagles, honey buzzards, marsh harriers and goshawks all successfully managed to re-establish themselves in this country.