Can confirm... Was flying back home and during a layover in Mumbai I grabbed some food from the food court. It was only after having sat down and eaten most of my food when I noticed that there were pigeons roosting directly above where my meal was purchased from, with their poop stains dribbling down the raised walls directly above the food. That was a particularly rough set of flights back home, but I lucked out and had a fairly empty flight for one leg of it that offered a full row of empty seats for me to lay down in and disassociate from the pain on.

(for anyone who is unaware, the airports - the ones I passed through, at least - in India are fairly open air, so birds were a common sight within them)

I think it was Anthony Bourdain who said pretty accurately that it's far safer to eat street food than restaurant food as street food is freshly cooked, hot and instantly sold while restaurant food might be sitting in a broken fridge over a weekend.