"Not a zoo keeper but worked in a zoos warehouse for a couple years. next time you go, ask someone which animals are “kill on sight” in an escape. the answers will suprise you.
lions and tigers are typically on the “tranq and capture” list, but a jaguar the size of a golden retriever is KoS. the zoo i was with, the 2 jags were the only animals on site that were on the shoot to kill list. even the silverback was the tranq first list.
to answer “why”:
jags will kill for sport, and if they escape they will claim an area as their own, then hunt and kill anyone in that area that they perceive as a threat (to them, or their food). all those videos of jags rubbing their paws on the glass near children? they weren’t hungry, the kids just look fun to kill to the jag."
Nytherion
You have never lived on a boat with wild birds overhead in masse, because some birds can definately choose WHEN they go. For survival they can release before flight, to gross out a predator, or mark territory/flight path. Or they can hold it near their nests to avoid attracting attention. No animal as evolved as a bird would leave pooping up to pure chance.