Sadly, the yellow-headed blackbird is a much rarer sighting these days. That was one of my first entries in my birdwatching book when I was in elementary school back in the mid-50's.
But what I miss most these days is the meadowlark, whose song is one of the prettiest I ever heard. Big Ag, mono-cultures, and insecticides are the main cause for most of the problems with species intervention. In Iowa, corn is King, but unfortunately it's main source of revenue is now bio-fuel instead of food. And hog confinements are a major source of pollution in our streams, rivers, and lakes.
Deniers of all these problems are currently in charge of Iowa government. But I have Hope.