Grackle gang chased away the crows?

I’ve been courting the crows in my neighborhood for the last two years. Last fall they took more of an interest in the food I was putting out and came by fairly consistently up until about November. The visits restarted early spring, they would usually come by in the morning to grab the egg (hard boiled or raw, depends on the day) and loose peanuts I put out for them. They don’t usually hang around too long and are very skittish if I come outside when they are around. A couple of days ago my daughter saw a bunch of grackles and other small birds harassing a crow and chasing it off. They haven’t been back to visit since and now every morning I have 5-6 grackles in my yard. Will the crows be back or is my yard grackle territory now?