A series of four photographs showing the return of a Great Blue to the nest, and the mates reaction. Herons usually display excitement at the sight of the other.
Several birds may land in the same rookery tree, the Great Blue will recognize their mate immediately.
As the returning bird gets closer you can see each birds reaction.
I find this interesting because I see this same scene with the Great Egrets that nest here. Many also greet their mate, but others look like they should be introduced to each other.