>>Here's an interesting solution:
>>https://www.latimes.com/science/sciencenow/la-sci-sn-birds-fly-v-switch-lead-ibis-20150203-story.html
>
>I wonder if any of the authors of that study have watched a paceline in road race cycling over the last few decades...

Good question, Al.
However, for the road cycle, direction is not usually an issue.

That bird at the tip of the V not only has to carry everyone, but has to keep everyone on course.