I had a bird just miss the drone when I was shooting a car chase. I didn't even see it. The driver of the car saw it when it flew up out of the tall grass right between the car and the drone. Looking back at the footage, we saw the flash of the bird going by.
Same as that in one of my shots over the water. You can see a dot getting bigger as the drone and dot fly towards each other then the dot becomes a bird and gives way at the last minute. I didn't notice until I saw the footage. In true Airmanship style he did give way correctly to the right so good for him!
We should be careful and respectful of our feathered friends. Not only would I hate to hurt one with my props but I'd hate them to hurt my Inspire. This is what a single crow can do to a airliner engine: