Mike the Headless Chicken was something of a celebrity in the western U.S. in the 1940s. He started life as an ordinary Wyandotte rooster in Fruita, Colo., but a botched decapitation in 1945 missed his brain stem and jugular vein, leaving him headless but still mostly functional.

When the rooster did not die, his surprised owner resolved to care for him permanently, feeding him milk and water with an eyedropper, as well as small grains of corn. Mike actually put on weight on this regimen: At his beheading he weighed 2.5 pounds; at his death he was up to nearly 8.

Mike reportedly seemed fairly happy with his headless existence. He could balance on a perch and walk clumsily; he would even attempt to preen and crow, as far as possible without a head.

On tour, Mike made $4,500 a month at West Coast sideshows. Animal-rights activists were aghast, but several humane societies examined him and declared he was free from suffering. He finally died in March 1947 at a Phoenix motel, 18 months after losing his head.

To this day, Fruita holds a “Mike the Headless Chicken Day” each year on the third weekend of May. Events include Pin the Head on the Chicken, a “chicken cluck-off,” and chicken bingo, in which chicken droppings fall on a numbered grid to determine the numbers.

This is the most isolated tree on Earth, the “Tree of Ténéré,” a single determined acacia that grew alone for decades in the Sahara in northeastern Niger. There were no other trees for more than 400 kilometers; it was the only tree to appear on maps of the area, even at a scale of 1:4,000,000.

“What is its secret?” wondered a French commandant in 1939. “How can it still be living in spite of the multitudes of camels which trample at its sides? How at each azalai does not a lost camel eat its leaves and thorns? Why don’t the numerous Touareg leading the salt caravans cut its branches to make fires to brew their tea? The only answer it that the tree is taboo and considered as such by the caravaniers. … The acacia has become a living lighthouse; it is the first or the last landmark for the azalai leaving Agadez for Bilma, or returning.”

What could bring down such an exalted spirit? Believe it or not, it was hit by a truck. Twice. The first instance, in which a lorry headed to Bilma detached one of its two trunks, happened apparently in the 1950s. The noble tree struggled on for 20 more years before it was knocked down by an allegedly drunk Libyan driver in 1973. The dead tree was taken to the Niger National Museum in Niamey; today it’s been replaced by a simple metal sculpture. (Image (c)2001 Peter Krohn)

You always know when it’s 11 a.m. at Memphis’ Peabody Hotel: Five ducks are escorted from their penthouse suite, down the elevator to the lobby, along a red carpet (accompanied by a Sousa march), and into the fountain, where they spend the day. At 5 p.m. they return, with equal ceremony.

This has happened every day since the 1930s.

Short on human help, England enlisted another species at its Sheffield munitions plant during World War I.

Write your own joke.

For a time in the 1880s, a baboon named Jack was employed as a railroad signalman in South Africa. He was working, apparently successfully, as a voorloper, or ox driver, in the Eastern Cape when he was discovered by James Erwin Wide, a Uitenhage signalman who had recently lost his legs in an accident.

Impressed and needing a helper, Wide bought the baboon and trained him to operate his junction. When a train approached it would identify itself with a whistle; Jack would get the keys, head into the signal box and pull the correct lever to change tracks. Alarmed riders complained, but railway management investigated and were so impressed that they actually put the baboon on a railway allowance and rations, including a small amount of brandy per day.

I know this sounds preposterous, but there are photographs of Jack at work and eyewitness accounts of his abilities. His skull can be seen today in the Albany Museum in Grahamstown.

Self-portrait by Sarah Biffen (1784-1850), a Victorian painter who had no arms.

She painted this with her mouth.