Chumba Casino does not offer a specific birthday bonus, but they do provide various promotions and bonuses to their players. These bonuses can include free Sweeps Coins, bonus money, and free spins on select games. Players can stay updated on current promotions by checking the Chumba Casino website or their email notifications. By participating in promotions and playing regularly, players can increase their chances of receiving rewards and bonuses from Chumba Casino. It is recommended to read the terms and conditions of each promotion to understand the requirements and rules associated with receiving bonuses.