Wondering why the name Hummingbird? Google says the name come from being "precise and fast". Google started using Hummingbird a month ago but announced the change on September 26th. If anyone is curious about your less traffic in this month, this change could be a reason.Google has last updated its algorithm like this perhaps on 2001.
Do not get confused with Panda and Penguin updates, those
were the changes to parts of the old algorithm. Hummingbird is a brand new
search algorithm, though it continues to use some of the same parts of the old,
like Penguin and Panda. "In general, Hummingbird — Google says — is a new
engine built on both existing and new parts, organized in a way to especially
serve the search demands of today, rather than one created for the needs of ten
years ago, with the technologies back then" said Danny Sullivan in SearchEngine Land.
Hummingbird aims to help Google to understand conversational
or voice search. The goal is that pages matching the meaning do better, rather
than pages matching just a few words. Google says there is nothing new SEO's or
publishers need to worry about and SEO is not yet dead since it have original
and quality content.