Those who have followed the doings of the white-tailed eagles in the webcam for years know what it is about. The inseparable part of nest life – the eagles mate in early morning somewhere nearby and similar sounds we will hopefully hear ever more often.
A sound signalling that in time we can expect the female to start laying eggs.
Image from the webcam captured by Liz, LK forum
They didn’t start working at the nest until evening, in daytime they were carrying on with eagle business somewhere – proper feeding is needed if there is a chance somewhere before the exhausting brooding period.