- Original release
- Previous episode S2017E29 - Where Do Our Drugs Come From?
- Number S2017E30
- Country United States
- Original language English
- Genre Documentary
-
External links
TheTVDB page
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Last update
17 avril 2026 - 06:47
on 11 databases
Why Bird Penises Are So Weird
Male birds have the largest genital diversity of any class of animals because their sex chromosomes make it easy to pass male-helping mutations down the line.
Next episode
S2017E31 - What Are Brain Waves?
