Dont know if this is happening for anyone else, but even though I've found the Vigrid Roughland Yardbird, clicking on him doesn't give you credit for findng him, nor does standing on top of him. Maybe the devs would be kind enough to check it out? :-)
One is behind a tree in the berry patch near Egil Axebearer.
The other is near the lost bear Hans. Behind Hans follow the grassy path. It is very hard to see the path because it blends into everything. But go behind Hans and follow the winding path to the top of the hill.