This video shows two adult sea eagles resting in Dutch Lauwersmeer national park on 14 August 2016. Gulls try to drive them away.
Translated from Dutch NOS TV:
Sea eagle couple in Lauwersmeer gets twins
Over the last three years, breeding failed twice. Last year was better, the eagle couple got one eaglet.
“The last time we had two young birds here was in 2013,” says forester Jaap Kloosterhuis.
The Forestry Department observes the birds from a distance. “We can and do not want to get too close. We follow them with a telescope.”
The youngsters do not look that young any more. “They already have feathers,” says Kloosterhuis. Therefore, they will likely be ringed soon.
The foresters will discuss when to ring the eaglets this afternoon. Young birds are ringed when their legs have become fully grown, so that the rings will not harm them.
Warden Bertwin Bergman of Oostvaardersplassen national park reports that local white-tailed eagle twins have been ringed today. There, in 2006, sea eagles nested for the first time in the Netherlands after centuries of absence. Ever since 2007, Oostvaardersplassen eaglets have been ringed; so, today was the 11th time.