Out of curiosity, are birdstrikes whilst maneuvering slowly or hovering in a helicopter common?
I have had a couple in the past but that was operating on an estuary where the sea bird concentration was quite high. One seagull flew down through the disc as we approaching dispersal which was rather terminal for the gull but only left smears of blood and feathers on the blade.
Some of the worst are the big soaring birds which tend to be less easy to see as they can be almost stationary and then suddenly get very big in the windscreen - there are plenty of stories about them ending up in the cockpit, some still alive and quite pi**ed off.