This is one of those great examples of research you can probably use in an advanced biology classroom (high school) or intro college bio pretty effectively. It includes birds. It includes hormones. It includes evolution. What else is there, really?
I did a very brief writeup on it here, and you can get the original paper which is very straight forward and readable.
The bottom line: Females in one species of bird manage to figure out that under certain, occasional conditions if they produce really obnoxious and overbearing sons, those sons will do well. So they do. There is a phylogenetic reasons they can do this, and it has to do with development and adaptive change. In other words, this example is a Tinbergian wet dream.