AGE: 1st chick - 58 days old ; 2nd chick - 57 days; 3rd chick - 55 days old 4th egg did not hatch
btw. ringing + transmitter: 58 days old/2019 Oru, Aru - both jumped/flew out; 55, 55, 53 days old/2023 Kalvi, Kiire, Kerri - 2 jumped/flew out)
----- Ringing in Kergu's nest will probably be delayed until it's possible to equip a transmitter, to avoid multiple disturbing to the nest. (info by our Madli shared via email on Tue 1 Jul, 18:55 )