Here is an Enstrom (N9285) pilot from the USA showing cockpit footage of a bird strike and then discussing his response after the incident, including a precautionary landing where he found the bird did indeed strike the rotor mast:
Enstrom helicopters have that curious feature where the pitch control linkages must run up inside the mast, therefore being somewhat protected. However from 1:35 into the footage the pilot makes mention of a fatal USMC helicopter crash when a hawk struck one of its pitch control links. It is probably the AH-1W Cobra described in this news report:
https://verticalmag.com/news/20595-h...arted-12-html/