Information on Full Spectrum Lighting for Birds

The ultraviolet rays found in ambient sunlight allow birds to properly synthesize calciferol and cholecalciferol, which assist in regulating calcium and mineral uptake. The rays also affect a bird's ability to see colors, reproduce and develop healthy skin and feathers.

  1. Color Rendering Index

    • The color rendering index (CRI) of natural sunlight is 100. Artificial bulbs with a CRI of at least 90 offer caged birds a reasonable substitute for natural sunlight. To provide optimal benefit from these bulbs, place the lights within one to two feet of bird cages (depending on bulb strength), but out of the range of inquisitive beaks.

    Ultraviolet Spectrum

    • Natural sunlight produces ultraviolet rays called UVA, or "near ultraviolet light," which is the closest to visible light, and UVB, also called "middle ultraviolet light," which signifies its wavelength classification in the UV spectrum. In the absence of natural sunlight, artificial lighting provided by full spectrum bulbs offers birds access to similar rays. Fluorescent and incandescent bulbs developed specifically for avian use are available. Check the packaging to make sure the bulbs are intended for avian use and not for reptiles, as the requirements for reptiles are different.

    Timing

    • Set a timer to turn the lights on and off to mimic the natural, seasonal hours of sunlight. The duration of hours in natural sunlight varies from season to season and tells birds when to migrate, seek mates or where to find food. Molting, which is the process of shedding old feathers and growing new ones, is also influenced by sunlight or the ultraviolet rays produced by artificial lighting.