pigeons sit on ledge
ledge is higher up than most similar nearby structures
2 birds on the ledge
the background is blurry
Two pigeons on a roof.
A roof top edge. 
A cloudy background sky.
Two pigeons in shadows.
An overcast sky in background.
two pigeons on the rooftop
a black ledge on the roof
two birds watching from on top of a building
a black and white bird perches on the wall while a couple of pigeons stand perched on top of the roof