Unlike conventional fluorescent lamps, Arcadiabird lamps use special UV-emitting phosphors to replicate the spectral pattern of the sun's rays. Arcadia bird lamps give light for the life of your pets! Not so long ago, people, keeping birds in captivity, did not think about the function of sunlight in the life of birds. All Arcadia products have a one-year warranty for UVB radiation and do not have a large drawdown after 100 hours of operation.