Where aerial agriculture is concerned, bird strikes are a common (almost daily) occurrence. These include ingestion into Garret Turbine powered machines which rarely result in any power loss, much less, engine failures.
There are no statistics on the frequency of such events as they are so common-place. I dare say that there is also a high frequency of unnoticed/unreported bird strikes and ingestions which will never contribute to the documented history of such. In other words, I'm sure it happens every day to airliners as well.