It is important for birds to get access to natural sunlight, but this is not always possible. Even if you put your birdcage by a window, it doesn't allow birds to absorb necessary UVA and UVB rays. An alternative to daylight is full spectrum light.
Birds generally need 12 hours of daylight and 12 hours of darkness to regulate sleep.
Control Metabolic Processes
Full spectrum lights can also be used to control the number of hours of daylight that affects birds' metabolic processes such as breeding and molting. For instance, in the Northern Hemisphere, June has more hours of daylight than December.
Vitamin D Production
UVA and UVB rays help to synthesize vitamin D in birds. A vitamin D deficiency can cause soft bones, chick death and seizures.
The lamp should be placed no closer than 2 feet to the cage. Any closer can cause discomfort and problems in the bird's visual acuity.
When setting up a full spectrum lamp, make sure you get bulbs designed for birds and not reptiles. Those require a different kind of illumination.
Article Written By Shiromi Nassreen
Shiromi Nassreen has been writing professionally since 2005. She specializes in travel and outdoor topics, and her articles have appeared in various print and online publications, including "DISfunkshion Magazine" and Matador Travel. Nassreen holds a Bachelor of Arts in theatre studies from Rose Bruford College of Speech & Drama.