40:I[185,["/_next/static/chunks/08z4tkzvltetr.js","/_next/static/chunks/121~yigv24_j6.js","/_next/static/chunks/0jo3du-icy6v2.js","/_next/static/chunks/15cy49d~_zsjj.js","/_next/static/chunks/0..ktetnpeix7.js","/_next/static/chunks/0_htf5~kl..m1.js","/_next/static/chunks/0i6hzvr84kc1r.js"],"SendEmailButton"] 42:I[63625,["/_next/static/chunks/08z4tkzvltetr.js","/_next/static/chunks/121~yigv24_j6.js","/_next/static/chunks/0jo3du-icy6v2.js","/_next/static/chunks/15cy49d~_zsjj.js","/_next/static/chunks/0..ktetnpeix7.js","/_next/static/chunks/0_htf5~kl..m1.js","/_next/static/chunks/0i6hzvr84kc1r.js"],"AddToLibraryButton"] 43:I[29721,["/_next/static/chunks/08z4tkzvltetr.js","/_next/static/chunks/121~yigv24_j6.js","/_next/static/chunks/0jo3du-icy6v2.js","/_next/static/chunks/15cy49d~_zsjj.js","/_next/static/chunks/0..ktetnpeix7.js","/_next/static/chunks/0_htf5~kl..m1.js","/_next/static/chunks/0i6hzvr84kc1r.js"],"ShareButton"] 44:I[58016,["/_next/static/chunks/08z4tkzvltetr.js","/_next/static/chunks/121~yigv24_j6.js","/_next/static/chunks/0jo3du-icy6v2.js","/_next/static/chunks/15cy49d~_zsjj.js","/_next/static/chunks/0..ktetnpeix7.js","/_next/static/chunks/0_htf5~kl..m1.js","/_next/static/chunks/0i6hzvr84kc1r.js"],"ProcessEpisodeButton"] 45:I[45269,["/_next/static/chunks/08z4tkzvltetr.js","/_next/static/chunks/121~yigv24_j6.js","/_next/static/chunks/0jo3du-icy6v2.js","/_next/static/chunks/15cy49d~_zsjj.js","/_next/static/chunks/0..ktetnpeix7.js","/_next/static/chunks/0_htf5~kl..m1.js","/_next/static/chunks/0i6hzvr84kc1r.js"],"SignupCTA"] 3b:["$","div",null,{"className":"flex flex-wrap items-center gap-x-4 gap-y-1 font-mono text-[12px] uppercase tracking-[0.1em] text-[color:var(--fg-3)]","children":[["$","time",null,{"dateTime":"2021-02-23T23:35:11.000Z","children":"February 23, 2021"}],["$","span",null,{"aria-hidden":true,"children":"·"}],["$","span",null,{"children":"00:55:00"}],false]}] 41:T422,

Professor Heather Williams teaches us about cultural versus genetic evolution, how bird songs change over time, getting arrested while conducting research, getting hit on by customs at the airport, and a little more!

Male savannah sparrow recordings: https://soundcloud.com/williamscomms/sets/bird-sounds

Lyrebird mimicking chainsaw: https://sound-effects.bbcrewind.co.uk/search?q=NHU05021062

Awesome Lyrebird BBC Video: https://www.youtube.com/watch?v=mSB71jNq-yQ

Connect with us:

Twitter: https://twitter.com/eggheads_fm

Reddit: https://www.reddit.com/r/crackingeggheads/

Gmail: crackingeggheads@gmail.com

Website: https://www.crackingeggheads.com/