If your budgie is shaking its head and throwing up millet, it could be due to several reasons: indigestion, practicing regurgitation, or potentially enteritis. You can try adding some glucose to their water to help with digestion and seek veterinary care if the problem persists. 1. Indigestion Young budgies, especially those that are not fully grown, may have less developed digestive systems compared to adult birds. This can lead to indigestion. Adding a small amount of glucose to their water can aid in digestion and provide them with extra energy. Keep a close eye on their eating habits and stool consistency. Observing whether there is any change in the budgie's vomiting after adjusting their food or drinking water can help with the diagnosis. 2. Practicing Regurgitation Regurgitation is a common feeding behavior among budgies. This is particularly true for adult male budgies when a female is preparing to lay eggs. The male bird will practice regurgitating food to better feed the ...