World Record Title: The world's smallest bird: Cuban bee hummingbird

World Record Creator: Cuban bee hummingbird
World Record Holder: Cuban bee hummingbird
World Record Field: The world's smallest bird
World Record Rules: The world's smallest bird
World Record Number: 20120300012
World Record Validity Period: Until the world record was broken.
World Record Witness: World record certifier 008 of Carrying the Flag World Records
World Records Source: World record database of Carrying the Flag World Records
Awarding Certificate Date: March 15, 2012
World Record Details:

The world's smallest bird: Cuban bee hummingbird. 5.6 cm in length and weighing about 2 grams. Egg weighs about 0.2 grams. For the animals in the world.