Building mix: north-east corridor homes, a mix of apartment balconies, villa sit-outs, AC ledges and roof-edge shades
Outdoor conditions: Dust off Hennur Road, shaded ledges, dry balcony corners and the seasonal rain all make droppings stick harder while the perch stays open, so the fixing is chosen to suit that.
Common layout cue: The usual things to check in Hennur are the balcony front, the side return, the AC platform, the window shade, the pipe pocket and the upper beam. Photos go a long way in judging the height, the access and the fixing surface before a visit.