Here is an interesting video where you can see how they are testing jet engines before they can be certified for flight - they chuck various stuff inside includ

Here is an interesting video where you can see how they are testing jet engines before they can be certified for flight - they chuck various stuff inside including dead birds: http://www.youtube.com/watch?v=_jfXX7qppbc http://www.youtube.com/watch?v=_jfXX7qppbc