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FULL SPECTRUM - 6500k BULB - $ 14.99

One of the most commonly asked questions by birdkeepers about cage lighting concerns the effective and proper usage of full spectrum (or FS) lighting devices. Only a kelvin rating of 6500k will give the desired effect. The lower kelvin rating of 5500 as found in low voltage and energy saving bulbs will NOT have the desired benefit of 6500k full spectrum lights. Birds and reptiles have completely different illumination and dietary requirements; it is an error to translate the application of lighting for reptiles to practice with birds. The quality of this full-spectrum light is unsurpassed, and reasonably price. Fits into practically any fixture, and is economical to operate. Delivers approximately 100 watts of light, and draws only 20 watts of power. It effectively lasts 8,000 hours, or the bulb-life of ten conventional light bulbs. Full-Spectrum light is necessary for the proper utilization of calcium. FULL SPECTRUM LIGHT DOES NOT PASS THROUGH WINDOW GLASS OR PLASTIC, SO IT DOES NOT MATTER HOW CLOSE YOU PLACE THE CAGE FOR YOUR BIRD TO ANY WINDOW. Unless a pet bird spends time daily in direct sunlight -- OR IS ILLUMINATED WITH A 6500k full spectrum bulb -- birds can develop serious deficiencies. The real effect of lighting upon general health, new molt, feather appearance, and behaviors is brought about by a balanced avian visual spectrum.  Supplement artificial lighting whenever possible with natural unfiltered sunlight, and feed a high quality balanced diet.  This combination of factors will meet all of your bird’s requirements for lighting and nutrition.

(1).  Natural sunlight at high noon in the equatorial regions is considered a CRI (color rendition index) 100.  The combination of sunlight and skylight combine to form a Color Temperature of 6500k.  A lamp with a CRI 94 or greater is recommended.
(2).  This Internet study was conducted by the author in the first quarter of 1999, and contained a representative sample of 500 aviculturists from all levels of competence.  A sample this size allows for a 96% confidence level that the answers gained are statistically valid, and are typical of general birdkeeping practice.
(3).  http://www.users.mis.net/~pthrush/lighting/
(4).    MacLaughlin, J. A., Anderson, R. R., Holick, M. F. 1982.  Spectral character of sunlight modulates photosynthesis of pre-vitamin D, and its photoisomers in human skin.  Science 216:28 May. pp.1001-1003;  Gehrmann, W. H.  1987.  Ultraviolet irradiances of various lamps used in animal husbandry.  Zoo Biology 6:117-127
(5).  Lamps and Lighting: A manual of lamps and lighting application.  1983.  Third Edition.  Cayless, M. A., Marsdep, A. M., Eds.  Edward Arnold: Baltimore; Duro-Test Corporation Commercial Engineering Technical Specifications E1-10 & 40T12 R.S.
(6).  Vision, Brain, and Behavior in Birds.  1993.  Zeigler, H. P., Bischof, H. J., Eds.  MIT Press: Cambridge, MA.
(7).  Dr. John Ott worked with Duro-Test in the late 1960's, to develop and produce the Vita-Lite.  He later spun off his own company incorporating FS lamps into specialty lighting housings.  He sold out his interests and rights to that company, Ott Biolite in the early 1990's.

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