In Roblox: Grow a Garden, the RBH Birb—the Rainbow‑Hatched version of the ultra‑rare Birb pet—has become the center of community frustration after a critical bug made its egg‑hatching passive stop scaling properly. The glitch leaves the prized pet performing worse than expected, disappointing players who invested heavily during the January 2026 Hungry Birds update. If you're wondering how to use Grow a Garden tokens, U4GM provides clear instructions and tips on how to maximize the value of your tokens in the game.

Birb itself is a prismatic pet obtainable from Bird Eggs by feeding fruits to nests, offering players a strong passive called Birbegg. Every five minutes, this ability advances all egg hatch times by 150 seconds and has a 30% chance to apply a 2.72x multiplier—making it one of the best hatching pets available, even outperforming the Bald Eagle for speed efficiency. The RBH version, unlocked through rainbow hatching, was designed to multiply these benefits dramatically through layered scaling, but a coding issue prevents this bonus from functioning correctly.

Testing by players shows that RBH Birb’s passive currently displays multipliers ranging only from x1 to x1.6 when paired with Mimic Octopuses, instead of the expected x21.3 or higher. As a result, the pet functions almost identically to the basic Birb, undermining its premium rarity and high trading value. The problem appears similar to earlier bugs affecting other pets like the Giant Scorpion, where passives sometimes show as “invalid” or fail to apply at all. A comparison of in‑game performance highlights the issue clearly:

Aspect                            Normal Birb                  RBH Birb (Bugged)
Hatch Boost                  150s + 2.72x chance      Same, no scaling
Mimic Synergy          Moderate multiplier          Stuck at x1–x1.6
Trade Value                 High for event rarity        Unstable until fixed

For late‑game players who rely on optimized hatch chains, the bug significantly slows egg progression across large gardens. Casual players may not notice much change, but traders have already begun to avoid RBH Birb until a patch resolves the issue.

Community videos and forum posts now caution against buying or trading for RBH Birb until developers release a fix. Despite the bug, some players continue to value the pet based on its long‑term potential, hoping its performance will match expectations once updated. Many are watching closely for the next Grow a Garden patch notes, which may address this error alongside other persistent passive glitches.

The RBH Birb’s bug may have dimmed its sparkle for now, but its future remains bright. A proper fix could restore its original design and help it reclaim its place as one of the most powerful—and colorful—pets in Grow a Garden.