PSITTACIFORMES: Psittacidae
Melopsittacus undulatus
Looking like they are having a great time at a country dance, two Budgerigars fly around each other.
One had been preparing a nesting hole in the adjacent tree and I'm not sure if the other is her mate or a potential competitor for the hole and is being chased away.
Tra-la-la La-lal-La-la...