The first tawny owl chick was hatched on May 7, the second one on May 9, the third on May 10, and little baby, from the nest egg, on May 12. So it all happened within five days, and everyone can compare their sizes in the picture.
http://www.looduskalender.ee/en/node/7390?utm_source=twitterfeed&utm_medium=facebook (http://www.looduskalender.ee/en/node/7390?utm_source=twitterfeed&utm_medium=facebook) Click on Tawny Owl cam to see them