I see flight distance every day outside with birds but have never seen it explained well.
There are some birds like Coots (Purple Swamphen, Pukeko ~ http://en.wikipedia.org/wiki/Pukeko or Porphyrio porphyrio) who's flight distance is about 20m. I cannot take an photo from the front ~http://www.flickr.com/photos/bootload/492391687/in/set-72157... The same with the little Corella (Cactua Gymnopis) ~ http://www.flickr.com/photos/bootload/3594879014/in/set-7215... No matter how careful the approach they always fly away at a set distance. Now compare this to the common everyday Magpie (Cracticus tibicen ~ http://en.wikipedia.org/wiki/Australian_Magpie) who even a young age ~ http://www.flickr.com/photos/bootload/3046710061/in/set-7215... don't seem too concerned how close I get ~ http://www.flickr.com/photos/bootload/3993808413/in/set-7215... The Sulphur Crested Cockatoos (Cacatua galerita ~ http://en.wikipedia.org/wiki/Sulphur-crested_Cockatoo) also seem to have evolved a shortened flight distance ~ http://www.flickr.com/photos/bootload/490365274/in/set-72157...
Now the question I'd really be interested in is, "could ideas like 'flight distance' be explained in Startups with respect to risk?", "Can you think of Startups in business evolutionary terms? where founders take more risks to obtain more personal reward?", "What are the 'pleiotropy' traits associated with Startups? and are they close to what's described in 'Startups in 13 sentences'?" ~ http://paulgraham.com/13sentences.html