"A little bird told me" is a popular phrase used when a person has some inside information about a particular topic. However, there are several synonyms for this phrase that can be used in different situations. For example, instead of saying "a little bird told me," you can use the word "whisper" to indicate that someone secretly shared information with you. You can also use the phrase "word on the street" to denote gossip or rumors about a particular topic. Alternatively, you can use the phrase "it has been said" to indicate that someone else told you something, but you're not revealing the source. Other synonyms include "I heard it through the grapevine" and "I was informed".