Sandra Forum Role: ParticipantActive Since: October 12, 2020Topics Started: 0Replies Created: 1 Profile Topics Started Replies Created Forum Replies Created Viewing 1 post (of 1 total) SandraParticipant That they take the babies so young to mark and study. Also that the markings stay on for such a long time. That crows live to be 19 years old in reply to: Crow Research Techniques #743286 Viewing 1 post (of 1 total)