Humming Bird is a Google’s new search algorithm, launched on September 27 2013. The algorithm sets to change the way results are displaced and searched.
Claiming that Google search can be a more human way to interact with users and provide a more direct answer.
Google claims that its Hummingbird algorithm offers a more natural way to use its search engines. In the past month Hummingbird was quietly deployed before any announcement was made
This algorithm can make use of more complex search requests and has a better understanding of the concept of human language, rather than a few scattered words. This new algorithm is a big step forward in the Internet history as searches will be more "human friendly" than ever.
Humming bird will definitely improve the rankings as long as your websites hosts high quality content with natural ranking pattern. SEO wise Humming bird just makes ranking a whole lot better.
The search has turned little different with humming bird and it is no more keyword specific. The search word relevant pages are displayed by the humming bird.