We have so many Blue Jays and their fledglings this year that it's been easy and interesting to observe their behaviors.
In my Hungry Baby Birds post, I had images of the Blue Jay fledgling begging behavior - wings out, fluttering, and following the adult with whiny calls.
That behavior is still going on. These young birds are not small, either, and seem able to feed on their own. The adult behavior towards them urges them to become independent. Today, I observed an adult who fed on sunflower chips, returned to the perch of a whining young bird and totally ignored him, even turning its head away from the young bird. The adult eventually flew off, followed shortly by the young one.
All that took place within 1 minute and was caught in the burst mode on my digital camera. The quality of the images aren't great, but you get an idea of some interesting jay behavior.
I've recently seen a couple jays that have lost all their head feathers at once.
The feathers do grow back but until then, this guy looks like a little blue Turkey Vulture!