I want to make it perfectly clear that I am not a bird behavior specialist…although I have been mistaken for one at cocktail parties.
I am just a bird observer, a mere mortal with an uncanny ability to be wrong about a lot of things.
In the spirit of keeping my track record very blemished, I would like to offer my thoughts on the interaction above. The wide spread wings of the bluejay above may mean, “STOP”. Perhaps little bluejay birds were crossing the branches on their way to bluejay school, crossing guards are always needed and heeded.
I didn’t notice any traffic or construction, but the commanding posture of the wings could indicate that oncoming birds should take an alternate route. I’ve been told that these worker birds take a lot of verbal abuse from frustrated fliers.
One last possibility for this behavior is some kind of weird attempt to find a date for the “spring fling.” Personally I think this move just smacks of desperation and I suspect this bird will be shunned and become the catalyst for an urban myth about a creepy, inappropriate bird that lurked in the woods.