I think it's just my location for whatever reason. I don't feed them. I only put milorganite on the lawn. We get lots of Orioles, Cardinals, and Blue Jays. To the point where I thought that was the norm for this region.
I'd fill both with Allium Millennial. You'll get three seasons of green, summer blooms, the squirrels will avoid the area altogether, they're low maintenance, and drought tolerant.
My Colombian husband will only allow Aguila Roja in our home. We usually get it when we or family go down to Cali. On the rare occasion we run out, I have purchased here for an arm and a leg:
https://www.amigofoods.com/agroca500grs.html