For the Birds Radio Program: Evolution

Original Air Date: Oct. 12, 2010 Rerun Dates: Oct. 4, 2016; Oct. 16, 2014; Oct. 11, 2013; Oct. 4, 2012; Oct. 6, 2011

“Survival of the fittest” doesn’t only refer to battles to the death.

Duration: 4′37″ Related blog post with transcript