Tweet of the Day

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Black Sicklebill Jan 29, 2015

Show notes

Michael Palin presents the black sicklebill of New Guinea. The black sicklebill is a breath-taking creature. It's a bird of paradise, and the male sicklebill's black feathers gleam with metallic blue, green and purple highlights. But his most striking features are a slender scythe-like bill, and an extremely long sabre-shaped tail whose central plumes can reach 50cm in length.

During courtship, he transforms his pectoral and wing feathers into a huge ruff which almost conceals his head and exposes an iridescent blue patch. Perching on a dead branch, he displays horizontally, looking less like a bird than a small black comet, all the while producing strange rattling cries.

It is thought that the Black sicklebill and its relative the Brown Sickle bill may have spooked the Japanese in the Second World War. Japanese forces had occupied the North coast of (Papua) New Guinea and during their push south to the capital, Port Moresby, had to cross the mountain territories of the sicklebills. It's said that on hearing the birds' courtship displays; they flung themselves to the ground, thinking that they were under fire from the Allies.

Producer : Andrew Dawes

Oilbird Jan 28, 2015

Show notes

Michael Palin presents the oilbird, from a Venezuelan cavern. Demonic screeching's and the rush of unseen wings mixed with a volley of strange clicks are the sound backdrop to oilbirds.

Oilbirds are known in Spanish as guacharos .."the wailing ones". These bizarre-looking brown birds with huge mouths, long broad wings and long tails were seen in 1799 by the explorer Alexander von Humboldt in 1817 who described their sounds as "ear-splitting". They're similar to nightjars, their closest relatives, but unlike them, oilbirds feed on fruit; ..... they're the world's only nocturnal flying fruit-eating bird.

In their dark breeding caves, they navigate using echolocation like bats. Young oilbirds grow fat on a diet of fruit brought in by their parents and can weigh half as much as again as the adults. These plump chicks were once harvested by local people and settlers for oil which was used in cooking and, ironically for a bird which spends its life in darkness, for lighting lamps.

Producer : Andrew Dawes

Poorwill (American Nightjar) Jan 27, 2015

Show notes

Michael Palin presents the common poorwill from an Arizona desert. In the dead of night, loud calls pierce the stillness on a moonlit track, a small shape suddenly sprouts wings and flutters into the darkness ... a Common Poorwill is hunting.

Poorwills are small nightjars that breed mainly in western North America, often in deserts and dry grassland. By day the poorwill sits in the open or among rocks relying on its mottled plumage for camouflage. By night, it emerges to hawk after insects snapping them up with its large frog-like mouth.

This technique works if it's warm enough for insects to be active, but in some places where poorwills live there are sudden cold snaps. Instead of migrating, the poorwill slows down its metabolism and goes into torpor for days or even weeks . This hibernation-like state is very rare among birds and allows the poorwill to get through lean periods and was first scientifically described in 1948, although the phenomenon had been recorded more than 140 years earlier by the great explorer Meriwether Lewis, during the Lewis and Clark Expedition to discover western side of America in 1804.

Producer : Andrew Dawes

Red-Eyed Vireo Jan 26, 2015

Show notes

Michael Palin presents the red-eyed vireo from North America. About the size of British great tits the red-eyed vireo is a common summer visitors to much of North America where they breed in woodlands. The adult vireos are mainly olive green with white bellies and grey heads and their red eyes are highlighted by a white eyestripe. Seeing the birds as they hunt insects among the leaves is much harder than hearing them, because red-vireos are tireless songsters. They used to be known locally as "preacher birds " and territorial males hold the record for the largest repertoire produced by a songbird in a single day.

Each vireo can have a repertoire of between a dozen and over a hundred different song-types. And while these marathon "question- and- answer" sessions are the soundtrack to many North American woods, they aren't universally appreciated. The nature writer Bradford Torrey wrote in 1889 that "whoever dubbed this vireo the preacher could have had no very exalted opinion of the clergy"

Producer Andrew Dawes.

Snail Kite Jan 23, 2015

Show notes

Michael Palin presents the snail kite from the Florida Everglades. Unlike many birds of prey which are known for their speed and agility, the snail kite hunts at a leisurely pace, one which matches its prey; and here in Florida's swamps, it is on the lookout for the apple snail.

To pick them out of floating vegetation, the kite has evolved long needle-like claws, and its slender, viciously-hooked bill is perfect for snipping the snails' muscles and winkling them out of their shells. Snail kites are common across wetlands in South and Central America, but rare in Florida where there are around one thousand birds. Drainage of these marshes has made them scarce, but popular with bird watchers.

It's easy to see why, because snail kites are striking birds with their orange feet and black and red bill. The males are ash-grey apart from a white band at the base of their tails. Females and young birds are browner and more mottled. In times of drought, they will eat turtles, crabs or rodents, but these avian gourmets always return to their favourite dish of, escargots.

Producer : Andrew Dawes

Greater Roadrunner Jan 22, 2015

Show notes

Michael Palin presents the greater roadrunner of south western North America. A cuckoo that can run at 20 miles per hour and snap up venomous reptiles might not seem destined for cartoon fame, but that's exactly what happened to the Greater Roadrunner.

The loud "beep-beep" call of the Warner Brothers cartoon creation, always out-foxing his arch-enemy Wile-E. Coyote brought this very odd member of the cuckoo family racing into the living rooms of the western world from 1949 onwards . Greater roadrunners live in dry sunny places in the south western states of North America, where their long-tailed, bushy--crested, streaky forms are a common sight. They will eat almost anything from scorpions to rats, outrunning small rodents and lizards and even leaping into the air to catch flying insects. As it runs across the desert, the roadrunner's footprints show two toes pointing forward and two backwards. The "X" shape this forms was considered a sacred symbol by Pueblo tribes and believed to confound evil spirits because it gives no clues as to which way the bird went.

Producer : Andrew Dawes

Horned Screamer Jan 21, 2015

Show notes

Michael Palin presents the Venezuelan horned screamer. Soundling as if someone is using a giant plunger in the Venezuelan marshes, these are the mating calls of the Horned Screamer. They're sounds that only another Horned Screamer could love, but then screamers are very odd birds. Over the years ornithologists have struggled to classify them, modern thinking puts their closest living relatives as the primitive Australian Magpie Goose.

Protruding from its head is a long wiry horn made of cartilage, which could rightfully earn it the title of "unicorn of the bird world" Usually seen as pairs or, outside the breeding season in small groups in the marshes and savannas of the northern half of South America, as you'd expect from their name , they are very vocal and these primeval bellows which sound more cow like than bird like and can be heard up to 3 kilometers away.

Producer : Andrew Dawes

Kakapo Jan 20, 2015

Show notes

Michael Palin presents the New Zealand Kakapo, high on the ferny slopes of its island fortress off the coast of New Zealand. Kakapos are flightless and the heaviest parrots in the world. They're also called owl-parrots from their nocturnal habits and open owlish expressions. Like owls their plumage is richly mottled although no owl shares their beautiful moss-green tones. Kakapos also have a curious mating strategy. The males gather at traditional "leks" or display areas to attract mates. At the top of a wooded ridge, the male digs one or more a bowl- like depressions in the ground which function as an amplifier. He then takes a deep breath, swells his throat-pouch like a balloon then releases the air with a soft booming call which can carry up to five kilometres. This sound can now only be heard on a handful of offshore islands. The kakapo story is tragically familiar. Flightless and ground-nesting, it was helpless in the face of settlers who logged its forests and introduced cats and rats which slaughtered the birds. Between 1987 and 1992 the last surviving kakapos were relocated to predator-free islands. Now following intensive care and a national conservation strategy, there are about 130 kakapos in the wild.

Harpy Eagle Jan 19, 2015

Show notes

Michael Palin presents the harpy eagle flying over the Brazilian rainforest. This is one of the most powerful birds of prey and links mythological corpse-bearers, the coat of arms of Panama and the Harry Potter films.

In Greek mythology harpies were creatures with the bodies of eagles and the faces of women, who seized people in their claws. A human body is beyond the real-life harpy eagle, but with its massive 12 cm talons, it can carry a full-grown sloth or an adult howler monkey. Being versatile hunters, the eagles catch a range of birds and reptiles and can easily hoist porcupines and armadillos into the treetops to feed their young.

Harpy Eagles breed in the rainforests of central and South America. They're blackish- grey above and white below with a black collar and a divided crest which gives them an uncanny resemblance to Buckbeak the Hippogriff in 'Harry Potter and the Prisoner of Azkaban'.

Producer : Andrew Dawes

Sulphur-crested Cockatoo Jan 16, 2015

Show notes

Tweet of the Day is the voice of birds and our relationship with them, from around the world.

Liz Bonnin presents the raucous calling sulphur-crested cockatoo from Australia. It is with somewhat heavy irony that with its loud, jarring calls, the sulphur crested cockatoo is also known as the "Australian Nightingale". These large white parrots with their formidable curved beaks and long yellow crests which they fan out when excited are familiar aviary birds. One of the reasons that they're popular as cage birds is that they can mimic the human voice and can live to a great age. A bird known as Cocky Bennett from Sydney lived until he was a hundred years old, although by the time he died in the early 1900s he was completely bald, and was then stuffed for posterity. In its native forests of Australia and New Guinea, those far-carrying calls are perfect for keeping cockatoo flocks together. They're highly intelligent birds and when they feed, at least one will act as a sentinel ready to sound the alarm in case of danger. So well-known is this behaviour that in Australia, someone asked to keep a lookout during illegal gambling sessions is sometimes known as a "cockatoo" or "cocky".

Producer : Andrew Dawes

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