For the past few weeks I'd seen a pattern repeating itself across the 
board with most of the clients that I do SEO and content marketing for, 
small drops in Page Authority and Domain Authority for every domain I 
was monitoring. I also observed some big leaps up the SERPs for content 
that was previously ranking poorly.
Despite suspecting that change was afoot, Google remained unusually 
quiet and while speculation was rife amongst those of us involved in SEO
 on a daily basis, nothing had been confirmed. That was, until 26th 
September 2013 when Google came clean and admitted that the new 
algorithm had been up and running for the past month.
Panda and Penguin were updates which changed part of the 
algorithm, but Hummingbird has replaced the old algorithm and it’s the 
biggest change in 3 years. It’s not just a major update or refresh, it’s
 an entirely new ranking algorithm.
This latest news comes hot on the heels of Google’s announcement that in
 future, all searches will be secure and as such, keyword data will no 
longer be available in Google Analytics. Not only this, but many website
 owners have spent the last few months dealing with the effects of the 
major Penguin refresh which hit earlier this year and had far reaching 
effects, making ‘bad’ SEO not just unsuccessful, but ensuring guilty 
websites were actively penalised.
Hummingbird aims to deliver results which are precise and fast 
Whilst specifics are still somewhat patchy, Google has confirmed that 
Hummingbird focuses on ranking information based on more intelligent and
 naturalistic search requests. In short, Google is getting smarter and 
is now better able to understand the relationships and relevance of 
words and phrases, instead of just considering a bunch of individual 
words. 
Google Hummingbird At A Glance
Google Hummingbird At A Glance
- Many of the existing rules and weightings still apply, so don’t stop doing what you are doing if your activities are based on Penguin pleasing, sustainable and ethical content focused techniques
 - A sizeable 90% of all searches are likely to be affected by Hummingbird though the full extent and reach of its effects is currently unknown
 - Known as Semantic search, more naturalistic or ‘conversational’ search terms (which tend to be long-tail in their nature) are now more important than ever
 - Google still wants to return the most relevant, accurate and useful search results to its users, Hummingbird provides a more sophisticated means for Google to deliver this
 - There is now less emphasis on individual keywords and more emphasis on their collective (semantic) meaning
 - PageRank remains an active ranking signal and Google claims that there is nothing massively different that SEOs need to be doing or worrying about