Someone asked on Twitter if hummingbird is specifically to identify spams to which John Mueller replied in negation.
When twitter user Ryosuke Shiga asked, “It is a question. Did you update Hummingbird as a measure against spam?” John Mueller replied, “All our algorithms have to deal with spam, but Hummingbird isn’t specifically for spam.”
Google had once said in 2014 January that Hummingbird is not to blame for ranking drops. This statement has been reiterated. It is important to note that Hummingbird impacts 90% of searches but there are a lot of algorithms which work together to put out the final result.