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 "Build a sibling set together!".
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.