[magicalhippo]

Reminds me of that old joke about then-modern stealth fighters having the radar cross section of a bird, with a reply stating that if they saw a bird going at mach 0.8 they'd fire some missiles at it.

[ben_w]

I have a vague memory that nobody knew how high some birds flew until military radar got good enough to see them.

They sent up an interceptor aircraft to check out what was flying up there, rather than missiles.

https://en.wikipedia.org/wiki/List_of_birds_by_flight_height...