26 Mar
2015
26 Mar
'15
10:37 a.m.
It's interesting that some butterflies migrate many thousands of miles and back, taking something like 5 generations to complete. I find that feat of navigation even more astonishing. I was going to mention < http://en.wikipedia.org/wiki/Monarch_butterfly_migration#Range_of_the_migrat... >, but decided that this is more authoratative and detailed: < http://www.monarchbutterflyfund.org/node/148 >. --Dan
On Mar 25, 2015, at 9:44 AM, Fred Lunnon <fred.lunnon@gmail.com> wrote: . . . . . . how did migratory birds manage to acquire the same capability?
On 3/25/15, Henry Baker <hbaker1@pipeline.com> wrote:
I heard a recent program on the ability of ancient Polynesians to navigate the Pacific Ocean w/o clocks/longitude or GPS. . . . . . .