This is the Three Wattled Bell Bird, recorded in Costa Rica, Central America.

Because of the secretive behavior of this bird, it is often only detected by the distinctive bell-like call given by the males. At close range, the vocalization of many in Costa Rica is heard as a complex three-part song, the “bonk” giving the bird its name. This hollow, wooden “bonk” is thought to be among the loudest bird calls on Earth, audible to humans from over 0.5 mi (0.80 km) away. 

Watch a phenomenal amount of videos with birds, including more that either look or sound quite unusual: the common potoo, the red-capped manakin, the not-to-be-missed birds of paradise, and the kookaburra. 

Via PopSci, Let This Rube Goldberg Machine Show You How Cows Eat And Poop. This is Cow by Nova Jiang.

Watch more Rube Goldberg machines, kinetic sculptures, and chain reactions.

Northern Arizona University’s Con Slobodchikoff, Ph.D., and his student-teams have been studying the alarm calls of Gunnison’s prairie dogs for over 30 years. The result: the prairie dog language has been somewhat decoded. Yes, we know what they’re saying when they yip and squeak!

From The Atlantic: 

The animals have word-like phonemes, combining those into sentence-like calls. They have social chatter. They can distinguish between types of predators that are nearby — dogs, coyotes, humans — and seem to have developed warnings that specify the predators’ species and size and color. 

This video is a win-win because you get to watch prairie dogs (and their predators), all while learning about how we observe, analyze, and test to find out more about their sophisticated animal language. Be sure to read the interview with Slobodchikoff for more information…

Puffins on Parade at the Monterey Bay Aquarium.

Sir David Attenborough and chameleons in Madagascar, then and now, a brilliant video that mixes flashbacks from a 1960 television show called Zoo Quest with 2008 color footage shot for the BBC TV series Life in Cold Blood. He has spent six decades presenting programs for the BBC thus far. 

There are more wonderful BBC clips, many with Sir Attenborough, in the archives.