Nothing like hitting a pigeon or catching a flying bit of branch at 300MPH, hurricanes put 2 x 4s through houses 2/3rds that speed so that would be a challenge.
At 250 mph, the TransRapid TR-08 simply vaporized any biological object it hame across little-to-no-damage to the vehicle (but there was a mess to clean up). A large object can be an issue, but small objects will likely be pushed aside by the pressure wave ahead of the vehicle.
That said the only other remarkable thing was how shaky the video was at 500km/h
The vehicle is still undergoing testing, the facility may not have figured out or implemented the ride-quality algorithms yet.