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  2. Drinking bird - Wikipedia

    en.wikipedia.org/wiki/Drinking_bird

    The drinking bird is a heat engine that exploits a temperature difference to convert heat energy to a pressure difference within the device, and performs mechanical work. Like all heat engines, the drinking bird works through a thermodynamic cycle. The initial state of the system is a bird with a wet head oriented vertically.

  3. File:Drinkend vogeltje video.ogv - Wikipedia

    en.wikipedia.org/wiki/File:Drinkend_vogeltje...

    English: The drinking bird is a heat engine that exploits a temperature differential to convert heat energy to a pressure differential within the device, and perform mechanical work. Licensing Public domain Public domain false false

  4. Dipper - Wikipedia

    en.wikipedia.org/wiki/Dipper

    White-throated dipper (C. cinclus). Dippers are small, chunky, stout, short-tailed, short-winged, strong-legged birds. The different species are generally dark brown (sometimes nearly black), or brown and white in colour, apart from the rufous-throated dipper, which is brown with a reddish-brown throat patch.

  5. The ‘drinking bird’ makes a comeback and could power your ...

    www.aol.com/drinking-bird-makes-comeback-could...

    After the bird’s beak is dipped into a cup of water, it springs back into its natural upstanding position, and the water begins to evaporate and cool the head.

  6. How birds get their colors. A visual guide to your ...

    www.aol.com/birds-colors-visual-guide...

    How do birds get their colors? Understanding bird coloration combines biology and physics. There are two primary ways that birds get their color: pigmentation and the physical structure of the ...

  7. It’s amazing what people can do when given some yarn and a hook. From scarves and pillowcases to handbags, sweaters, and toys, imagination seems to be the only limit to what can be crocheted ...

  8. Preening - Wikipedia

    en.wikipedia.org/wiki/Preening

    When preening, a bird (such as this red lory) draws individual feathers through its beak, realigning and re-interlocking the barbules.. Preening is a maintenance behaviour found in birds that involves the use of the beak to position feathers, interlock feather barbules that have become separated, clean plumage, and keep ectoparasites in check.

  9. Birdwatching basics: a beginner's guide - AOL

    www.aol.com/birdwatching-basics-beginners-guide...

    For beginners, an 8x42 or 10x42 binocular is a good choice because they provide a bright image and a wide field of view. A bird field guide is crucial in helping you identify different species.