I've run into birds all through the system with engine covers on. I asked a mechanic why this is, since it delays the walk around. I was told, it was a company directive, that if the bird was down for more than 4hrs (it may have been 5), covers needed to be installed. Summer was for bugs, and in cooler WX it was if precip was forecast. Seems like a lot of extra work, however they must have captured some kind of data proving the need. Or he may have said the covers scare Amazon away. It was loud, so I may have heard him wrong
