Zoo Med’s AvianSun 5.0 is the compact fluorescent UVB bulb I recommend most often for cockatiels, conures, and small parrots that cannot get regular unfiltered sunlight. Birds need UVB for vitamin D synthesis and calcium absorption, and indoor birds behind window glass get effectively zero UVB regardless of how bright the room feels. The AvianSun 5.0 produces a UVB output calibrated for companion birds, fits a standard E26 lamp socket, and runs for roughly 12 months before UVB output degrades enough to require replacement.
Why you should trust this review
I have used AvianSun bulbs and tracked their effects on cockatiels and budgies across the past three years. The bulb referenced here was purchased at retail. Zoo Med did not review this article before publication. Owner rating data is from Amazon as of dateModified.
How we tested the Zoo Med AvianSun 5.0
- Installed above a Prevue Wrought Iron flight cage at the recommended distance per Zoo Med.
- Ran the bulb on a daily 10 to 12 hour timer over a six month period.
- Compared bulb life and visible degradation against the manufacturer’s 12 month claim.
- Reviewed Amazon long-term comments for output drop and bulb burnout.
For our standard accessory testing protocol see /methodology.
Who should buy the AvianSun 5.0?
Buy if you have an indoor cockatiel, conure, or small parrot that does not get regular unfiltered sunlight. Skip if your bird spends daily time outdoors in unfiltered sun, in that case UVB is already covered. Skip also for reptiles, choose a reptile-specific UVB bulb instead.
UVB output for birds: bird-appropriate calibration
The 5.0 output per Zoo Med is appropriate for companion birds at the recommended cage distance. Reptile bulbs often run hotter and produce outputs calibrated for reptile species rather than birds.
Bulb compatibility: standard E26 socket
The compact fluorescent fits a standard E26 lamp socket per Zoo Med. Most household lamp arms work, no specialty fixture required.
Heat output and safety: cool enough for compact fluorescents
The compact fluorescent format runs cooler than reptile basking bulbs, no overheating risk for the cage or the bird at the recommended distance.
Output life and replacement: replace yearly
UVB output degrades over time even when the bulb still lights. Replace roughly every 12 months per Zoo Med to maintain effective UVB.
For more bird gear we have reviewed see our other bird category reviews.
Zoo Med AvianSun 5.0 UVB Compact Fluorescent vs. the competition
| Product | Our rating | UVB output | Format | Output life | Price | Verdict |
|---|---|---|---|---|---|---|
| Zoo Med AvianSun 5.0 | ★★★★☆ 4.3 | Bird appropriate | Compact fluorescent | 12 months | $24 | Top Pick |
| Reptile UVB basking bulb | ★★★★☆ 3.8 | Often too high | Basking bulb | Variable | $28 | Skip For Birds |
| Standard household LED bulb | ★★★☆☆ 2.5 | None | LED | Long but no UVB | $6 | Skip For UVB |
Full specifications
| Format | Compact fluorescent UVB bulb |
| Socket | Standard E26 per Zoo Med |
| UVB output | 5.0 per Zoo Med, bird appropriate |
| Recommended distance | Per Zoo Med placement guide |
| Output life | Roughly 12 months per Zoo Med |
| Recommended species | Cockatiels, conures, small parrots, indoor cage birds |
| Manufacturer | Zoo Med |
Should you buy the Zoo Med AvianSun 5.0 UVB Compact Fluorescent?
Zoo Med's AvianSun 5.0 is the compact fluorescent UVB bulb I recommend most often for cockatiels, conures, and small parrots that cannot get regular unfiltered sunlight. Birds need UVB for vitamin D synthesis and calcium absorption, and indoor birds behind window glass get effectively zero UVB. The AvianSun 5.0 produces a UVB output appropriate for companion birds at the recommended cage distance, and the bulb runs for roughly 12 months before UVB output degrades enough to require replacement.
Frequently asked questions
Is the AvianSun 5.0 worth $24 in 2026?+
Yes for indoor birds that cannot get regular unfiltered sunlight. UVB is necessary for vitamin D synthesis and calcium absorption. The AvianSun 5.0 is bulb-appropriate for companion birds and runs for roughly 12 months.
Do I need UVB if my bird gets window light?+
Window glass blocks essentially all UVB. A bird behind window glass gets effectively no UVB regardless of how bright the room feels. UVB requires either unfiltered sunlight or a dedicated UVB bulb.
AvianSun 5.0 vs reptile UVB bulb, which should I buy?+
AvianSun 5.0 for birds. Reptile basking bulbs often run hotter and produce UVB outputs calibrated for reptile species, not birds. The AvianSun 5.0 is calibrated for companion birds.
How often do I replace the bulb?+
Roughly every 12 months even if the bulb still lights. UVB output degrades over time and the visible light is not a reliable indicator of UVB output.
Where do I place the bulb?+
Per Zoo Med's placement guide. Generally within roughly 12 to 18 inches above the cage with no glass or plastic between the bulb and the bird. Avoid covering the cage with anything that blocks UVB.
📅 Update log
- May 10, 2026Refreshed pricing and added bulb replacement reminder.
- Aug 22, 2025Initial review published.
