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The down of birds is a layer of fine feathers found under the tougher exterior feathers. Very young birds are clad only in down. Powder down is a specialized type of down found only in a few groups of birds. Down is a fine thermal insulator and padding, used in goods such as jackets, bedding (duvets and featherbeds), pillows and sleeping bags.
An infrared heater or heat lamp is a heating appliance containing a high-temperature emitter that transfers energy to a cooler object through electromagnetic radiation. Depending on the temperature of the emitter, the wavelength of the peak of the infrared radiation ranges from 750 nm to 1 mm. No contact or medium between the emitter and cool ...
The Pekin or White Pekin is an American breed of domestic duck, raised primarily for meat. [6][7] It derives from birds brought to the United States from China in the nineteenth century, [8] and is now bred in many parts of the world. [6] It is often known as the American Pekin to distinguish it from the German Pekin, a distinct and separate ...
Bulbs with a range of 2700K to 3000K will cast a warm-hued light that's ideal for any room you want to relax. On the other hand, 4000K to 4500K is a cooler-toned white light ideal for areas you ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 31 August 2024. Species of bird Mandarin duck Temporal range: Pleistocene – Present, 0.8 – 0 Mya PreꞒ Ꞓ O S D C P T J K Pg N ↓ Male and female mandarin ducks at Martin Mere, UK Conservation status Least Concern (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum ...
The Welsh Harlequin is a breed of domestic duck originating in Wales. In 1949, in Criccieth, Group Captain Leslie Bonnet discovered a colour mutation among his flock of Khaki Campbells and began selective breeding for the trait. By 1968, hatching eggs were exported to the United States, followed by the importation of live birds in 1981. [1]: 199.