The name Birdie is a girl's name of English, Swedish origin meaning "bird". Birdie and is often added to lists like Best Cool Unusual Girls' Names and discussed in our forums with posts like "Rate the Previous Signature!".
From the experts:
Birdie was until recently a middle-aged Ladies' Club member wearing a bird-decorated hat --but now it's just the kind of vintage nickname (think Hattie, Josie, Mamie, Millie) that's coming back into style in a big way. Actress Busy Philipps named her baby Birdie (inspired by First Lady Lady Bird Johnson), as did soap star Maura West.
In an earlier heyday of nickname names--the 1880's--Birdie was a Top 200 name.