Usually so many Evening! The black headed are kind of rare.Very interesting about the suet. I assumed they were big into black oil sunflower seed like Rose-breasted and Evening but maybe not! Or maybe yours are just weird.
But wow, what a grosbeak combo!! I never thought about being able to see an Evening Grosbeak and a Black-headed at the same place before. That's awesome!
Don't have rose-breasted though, and I've always wanted to see a blue!