Birds are such a nuisance. I've had two drones taken down by birds. One was very recently just a couple weeks ago. thankfully, neither happened over water and I was able to recover the craft and have them replaced by DJI care. Unfortunately, I'm now out of replacement, so if it happens again, I'm out of luck.
I had a seagull hit me just a couple of days ago also. Cracked one of the props but no other damage. unfortunately for that one, I was a couple of hours from home and just starting a job. I didn't have my normal bag with me with replacement prop so I was unable to finish. And all the Best buy's around me were out of stock on props.
In all cases the strikes happened right around 50 to 60 feet. I'm definitely much more cognizant of them now, and sometimes just choose not to fly if there's too many birds around.