Birds are not the only problems on runways. Once while doing a taxi back for take off, a dear crossed in front of me heading towards the runway. So you really wonder where that dear is or if there are more when you power up on the runway and can't see beyond 2 runway stripes.
Loring AFB ME would have the SOF do a runway check just before the night fliers returned before sunrise. The problem, Moose.
Did a night T&G in the Bone, just as the mains came off the ground we saw something flash in the landing light but felt nothing. We had the SOF check the runway before we came around again. He found a dear on the runway with a broken back. We had to hold while they cleared the mess, and then the next was a full stop not knowing what we had in the gear.