crows are like sparrows   

Well, how long have the birds been trained? ))) or they themselves flock and sit where they need to already at the sight of you .. It could have been a little (quite a bit) to the right ..

there is a post, no wires - you can immediately see that the author has photographed them! Why would he have a huge reshpectus! : redtongue 

and three-billed, their leader, also lined up))