What is Hummingbird Update?
The name of this update is derived from the little bird -hummingbird known for its speed and accuracy. This update was released in September 2013.
The purpose of this update is to improve the results thrown for each search query by understanding the actual intention behind the user’s search. It focusses a lot on growing “conversational queries” that searchers use with the advent of voice based searches and increasing use of mobile phones.
Rather than being a penalty based update, this is an update to improve the user experience on Search Engine.