This is an automated archive made by the Lemmit Bot.

The original was posted on /r/science by /u/bitetheface on 2025-01-13 21:42:58+00:00.

Original Title: Birds may mate for life because it allows them to trust their partner. Female birds with experience with their partner focus their energy on laying a larger, more energetically taxing egg, relying on their mate to provide more chick care.