Incubation lasts for up to 17 days. Like all Irish birds, the young are born blind, naked and helpless. The young are ready to leave the nest when they are between 30 to 35 days old. When the young are of varying ages in the nest, each leaves on a phased basis. The parents feed the young at the nest and also at safe locations in the vicinity.
Jackdaws only have one brood of young each year.
The young jackdaws stay with the parents for about five weeks after they have left the nest before being fully fledged and out on their own. Eric Dempsey, 2001. For more information on Irish plant and animal species check out WildLibrary by clicking here .