Drinking bird

Drinking birds, also known as insatiable birdies or dipping birds, are toy heat engines that mimic the motions of a bird drinking from a water source. They are sometimes incorrectly considered examples of a perpetual motion device.

Construction and materials

A drinking bird consists of two glass bulbs joined by a glass tube (the bird's neck). The tube extends nearly all the way into the bottom bulb, and attaches to the top bulb but does not extend into it. The space inside the bird contains a fluid, usually colored. The fluid is typically dichloromethane, also known as methylene chloride. Earlier versions contained trichlorofluoromethane.

Air is removed from the apparatus during manufacture, so the space inside the body is filled by vapor evaporated from the fluid. The upper bulb has a "beak" attached which, along with the head, is covered in a felt-like material. The bird is typically decorated with paper eyes, a plastic top hat, and one or more tail feathers. The whole setup pivots on an adjustable crosspiece attached to the neck.

Charlie Parker discography

This is a list of Charlie Parker's recordings. Parker recorded extensively for three labels: Savoy, Dial, and Verve. His work with these labels has been chronicled in box sets. Charlie Parker's Savoy and Dial Sessions have been issued on The Complete Savoy Sessions, Charlie Parker on Dial and Complete Charlie Parker on Dial and The Complete Savoy & Dial Master Takes. His Verve recordings are available on Bird: The Complete Charlie Parker on Verve and The Complete Verve Master Takes.

The listing below is in the form of a sessionography as opposed to a discography. Although organized chronologically the release titles listed refer to compilations of Parker material appearing decades after the recording sessions. In general they do not refer to records in the formats actually issued during Parker's lifetime, so with a few exceptions technically they should all come under the heading of compilations. For instance, no record label in 1944 would have issued an album of 78s entitled The Immortal Charlie Parker to describe a relative unknown at that time, and in 1948 there would never have been a record entitled Newly Discovered Sides by Charlie Parker as if an unearthed archeological artifact - anything by Bird in 1948 would have been fairly new. It is also worth noting that a significant proportion of the listings outside of the live list are in fact live recordings.