Sometimes the mix of video and explanation can make me tear for the wonder and pleasure of it.. beauty, really, as in here:
http://www.theguardian.com/science/2014/jul/30/african-jackass-penguins-calls
click on the video when you get to the article - it doesn't go on very long (but seemed more than 16 seconds, probably that sixteen was just the last bit. But the article is good too.
Here's a photo at the top of the article, video somewhere below that.
Adult African penguins produce distinctive short calls to communicate their isolation from the group or their mate.
Photograph: Favaro et al/PLOS ONE
The article comments have interesting info too.
