What would make two kookaburras shout at the top of their lungs on a balcony in Queensland, Australia?

Were they trying to get the attention of the person inside the apartment? It certainly worked! He came out and offered food to the gathering flock.

The birds were laughing all the way.

p.s. The kookaburras laugh is a territorial song. It means, “This is mine!”

(video from Cockatiel Companion and The Pheasantasiam on YouTube)