There are two problems with reptile lights:
1. Specs: they usually only provide UVB light, some also have UVA but are not full-spectrum and their K-temp is wrong
2. Safety: reptiles have different eyes than birds (they have a yellow oil that protects their eyes from strong UV light while the avian eye doesn't have it)
So, although it is safe to use UBA/UVB lights usually meant for reptiles in a birdroom, they should never be used in a lamp or at the recommended distance but in a ceiling fixture.
Monica is correct that any light with a KTemp higher than 5500 is not recommended for birds as the higher the Ktemp, the bluer the light will be and it has an effect on their breeding conditioning, which works out fine for breeders but not for owners.
I use two sources in my birdroom (both are in ceiling fixtures smack in the middle of the room where there are no cages, no platforms or even perches):
a) two are the full spectrum tubes in a shop light fixture ([ame=http://www.amazon.com/Full-Spectrum-Fluorescent-Lamps-PHILIPS-950/dp/B0009INXIO/ref=sr_1_21?s=lamps-light&ie=UTF8&qid=1377453741&sr=1-21]Amazon.com: Full Spectrum Fluorescent Lamps-PHILIPS TL 950 - T8 (98 CRI, 5000 K, 48", 32 Watt, T8 - Case of 25): Lamps & Light Fixtures[/ame])
b) the third, in a fixture of its own but next to the shop light, is the UVA, UVB light (
Amazon.com: Zoo Med ReptiSun® 10.0 High Output UVB Fluorescent Bulb, 15 Watts, 18-Inch: Pet Supplies)
Hope this was of help to you.