They are curious and are not too afraid of people, and hang around houses a lot, especially in winter. This one got three eggs right from under an Eider in full few of about 15 people. After a debate on whether or not they should interfere, human observers returned the third egg to the nest, and offered a chicken egg to the weasel. The critter refused the substitute but got the hint and came back for the two eggs remaining in the nest. Both successfully hatched.
Filmed on June 19 2012 by Irina Kharitonova from the Bird Banding Center in Moscow. Location: Ryashkov Island of the Kandalaksha Nature Reserve.