Torsten Marczak, volunteer state coordinator for ospreys and peregrine falc...

An osprey (Pandion haliaetus) about five weeks old is fitted with a numbere...

Torsten Marczak, volunteer state coordinator for ospreys and peregrine falc...

Torsten Marczak, volunteer state coordinator for ospreys and peregrine falc...

Two ospreys (Pandion haliaetus), about five weeks old, are lying in their n...

An osprey (Pandion haliaetus) about five weeks old lies on a blanket during...

Colored origin rings and the numbered metal rings from the Hiddensee Bird O...

A fish eagle (Pandion haliaetus) about five weeks old is being lifted out o...

A fish eagle (Pandion haliaetus) about five weeks old is being lifted out o...

Torsten Marczak, volunteer state coordinator for ospreys and peregrine falc...