A military directed energy beam could be used on crows and pigeons. However, it is likely that many of them would be killed or injured by the weapon.

WD40 applied at appropriate places.

A directed-energy weapon emits energy in an aimed direction without the means of a projectile and will cause damage on anything electrical like computers causing millions in damage to personal property.

Richard Donner directed lethal weapon.

He worked on that for a period of time. He tested this weapon and weapons needs to be zeroed in to hit the target. Following the Tunguska in siberia he concluded that his weapon was out of target and was going to keep working on that but the departament of defense did not put conficend in the proyect.

Some scientist discard Tesla's statement on this regard. They brought several theories to the explotion but all has been debunked. I think the posibility of the directed energy weapon was a project that Tesla did finish it.