Flying geese on show.

They landed on a roof top with their typical loud Egyptian geese calls, and I also got their departure on camera. We heard them for the past week, as they are locked in a battle with another goose that wants to claim their territory. So, you can imagine how loud the battle sounds.
Let's see how Wikipedia describes their battles.

The Egyptian goose (Alopochen aegyptiaca) is an African member of the Anatidae family including ducks, geese, and swans. Because of their popularity chiefly as an ornamental bird, the species has also been introduced to Europe, the United States and elsewhere outside their natural range.
Both sexes are aggressively territorial towards their own species when breeding and frequently pursue intruders into the air, attacking them in aerial "dogfights". Egyptian geese have been observed attacking aerial objects such as drones that enter their habitat as well. Neighbouring pairs may even kill another's offspring for their own offsprings' survival, as well as for more resources.