I had 3 blue jays stop on my roof ( acts as one of my bird feeders) and they ate some seed briefly but I think what attracted them was the peanut shells. Unfortunately for them, the peanuts had been eaten by a squirrel and grackles earlier.
I always give the birds and animals unsalted peanuts too and what I consider healthy snacks not containing all the additives that our chemical burdens that our bodies must bear.
* laughs like crow, soars like eagle with vision of hawk, haunts like loon & lulls like nuthatch ....tickle tickle, feather has most powerful medicine of all...makes you laugh *