Whether breast or bottle fed, babies swallow air, some more than others. Attempt to burp your baby once or twice during feeding. He/she may not always need to burp. If the baby seems to be guzzling a lot of air, or seems full before the end of a feeding, you may need to burp more often. This maneuver is done by placing the baby over your shoulder and firmly patting or rubbing the back. You may also sit the infant in your lap and fold him/her over your hand and pat on back. It is common for the baby to spit up a mouthful of milk when he/she burps.