The FAA isn't looking at the current level of risk - they're looking at the trajectory of that risk. The number of drones is rising rapidly and they're trying to get ahead of the problem before there's a serious incident. Can you imagine the headlines if they ignored the problem and even a single seater light aircraft was brought down?
The results of a study by the "Academy of Model Aeronautics" is probably fairly predictable, likely to have some bias (in the same way that a study by the FAA is likely to have bias the other way).
The FAA is aware that drones are not the same as birds. I remember recently reading that the FAA has commissioned a study into the effect of drone strikes and how the damage might be mitigated, but I now can't find the reference.
The results of a study by the "Academy of Model Aeronautics" is probably fairly predictable, likely to have some bias (in the same way that a study by the FAA is likely to have bias the other way).
The FAA is aware that drones are not the same as birds. I remember recently reading that the FAA has commissioned a study into the effect of drone strikes and how the damage might be mitigated, but I now can't find the reference.