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How Wolves Change Rivers

Check out this brilliant short film from Sustainable Human about the effects of reintroducing wolves to Yellowstone National Park, where they had been absent since the last one was killed in 1926 until their reintroduction in 1995. 

While recent research suggests that the real story isn’t quite as neat and tidy as the one presented in the film (trophic cascades and food webs are incredibly complex! Who knew?!), it’s a great reminder of how every thread of an ecosystem plays an important part in weaving nature’s tapestry.


African Comb Duck - Sarkidiornis melanotos

This peculiar duck belonging to the species Sarkidiornis melanotos (Anseriformes - Anatidae) gets its common name from the large, fleshy, dark grey growth or ‘comb’ on the top of the male’s beak, an unusual and distinctive structure which enlarges during the breeding season.

Also known as Knob-billed Duck, the species has a wide distribution across sub-Saharan Africa, Madagascar, South and Central America, and tropical Asia, including Cambodia, China, India, Japan and Vietnam. 

References: [1] - [2] - [3]

Photo credit: [Top: ©Tony Faria | Locality: Austin Roberts Bird Sanctuary, Pretoria, Gauteng, South Africa, 2012] - [Bottom: ©Clive Chu | Locality: unknown, 2008]


dinodorksClidastes by Olorotitan


Clidastes (meaning ‘locked vertebrae’) is an extinct genus of mosasaur lizard from marine environments of the Late Cretaceous. Clidastes was the smallest of the mosasaurs, averaging 2–4 meters (6.6–13.1 ft) in length, with the largest specimens reaching 6.2 meters (20 feet) long. It possessed a delicate and slim form with an expansion of the neural spines and chevrons near the tip of the tail and this enabled it to chase down the fastest of prey… (x)

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