We call these the 'Sorcerer's Apprentice' birds, Bar-Shouldered Doves.They come out of the bush in single file, rather like Walt Disney's cartoon broom sticks. (All we need is the sound track.) And like the broom sticks, they just keep coming, sometimes up to 30 birds, and scour the ground around the aviaries for dropped seed.
They are very shy and melt back into the bush at the slightest movement.
The males take the opportunity to court the ladies with lots of tail fanning and calling.