#671: Ruffed Lemur

The Ruffed Lemur is a Critically Endangered primate found in scattered populations across the east coast of Madagascar. She is the largest of the "true" Lemur Family (Lemuridae). Her diet is vegetarian: leaves, fruit and seeds. Nectar is lapped from flowers. She is a major pollinator of the travellers tree, a palm-like tree endemic to the island. Female Ruffed Lemur will mate with multiple male, giving birth to twins or triplets. Unlike other Lemuridae lemurs, she does not carry her youngsters, instead leaving them safely in a well-hidden nest. Two species occur - this black and white, and the red. The two species will hybridise in captivity.

#670: Royal Flycatcher

The Royal Flycatcher is a member of the Tyrant Flycatcher Family. He makes his home in South America, with four subspecies (or possibly species). He is characterised by his striking crest of orange-red feathers, which he raises in courtship displays and when being handled. The Amazonian subspecies builds a very long, hanging nest over water. This protects it from predation. As his name suggests, his diet consists almost exclusively of insects. These are plucked from the air or taken from leaves.

#669: Roundworm

There are perhaps as many as 1 million species of Roundworm, a Phylum of Nematode, over half of which are parasitic. Widespread and versatile, various species inhabit every ecosystem from the deepest oceanic trenches to the driest deserts. They are also, most famously, known to occupy the internal organs of vertebrates, but species are also adapted to parasitise plants and insects as well. Long and slender, parasitic Roundworms have a distinctive head, which may contain head shields and three or six lips, equipped with an array of teeth. They may also be ornamented with bristles, ridges and other distinctive structures. Eggs are deposited in the soil via the host's fecal matter, where they can be ingested directly, or indirectly, by a new host. Once hatched, the larvae may affect the host's behavioural patterns and can have a detrimental effect on their health.

#668: Rothschild Mynah

The only bird endemic to Bali, the Rothschild Mynah perches on the edge of extinction. In 2001, only six wild birds existed, but captive-bred individuals were released to supplement the population. Now, his range is limited to a small patch within a national park. Here he lives in small flocks, feeding on insects, seeds and berries. Pairs are long-term and monogamous, with the two maintaining bonds through courtship rituals and mutual preening. His main threat comes from poaching, as despite strict restrictions around breeding and trading these birds, demand within the pet trade exists.

I made him a Zootrophy card (because I haven't for a while):

#667: Rosella

There are six species of Rosella spread across Australia and the surrounding islands. These colourful parrots inhabit forests, woodland and suburban parks. Diet consists mainly of seeds, fruit and vegetables. Several species are popular in aviculture, where they breed readily and live for over 20 years - but can be aggressive towards other birds.  This fellow is the Crimson Rosella of east and southeast Australia. He and the Eastern Rosella have also been introduced to New Zealand, probably escapees from aviaries, and have established localised populations.

#666: The Beast

The Beast was born in the belly of a volcano, the strongest of a litter of five, after their mother became trapped by a rockfall. He killed and consumed all of his siblings, before an eruption allowed him to escape. Now he roams the lava wasteland in the cool of night, hunting for stray animals or people that venture out after dark. Despite his size - around 6 feet in length, not including his tails - he moves with utter silence and stealth. The last thing his prey will see is the moonlight glinting off the bone-white of his skull and the golden gleam in his eyes.

#665: Roseate Spoonbill

The beautiful Roseate Spoonbill makes his home in South America, Central America and the US's Gulf Coast. His pink colouration is derived from his food, and can range from a pale pink to a bright magenta. His bare green head acquires a golden tint during breeding season. His distinctive bill is used to sift through mud, straining out the dirt and water, leaving him with mouthfuls of crustaceans, frogs, insect larvae and small fish.