The Twitter Blog post said,
Starting today you’ll begin to notice a simplified Twitter bird. From now on, this bird will be the universally recognizable symbol of Twitter. (Twitter is the bird, the bird is Twitter.) There’s no longer a need for text, bubbled typefaces, or a lowercase “t” to represent Twitter.
The design of the bird has also got some changes. The bird is now a little bit thinner than the old bird and has lost its hair. Twitter has also updated it's Logo Trademark Policies, which includes the following:
According to Twitter,
Our new bird grows out of love for ornithology, design within creative constraints, and simple geometry. This bird is crafted purely from three sets of overlapping circles - similar to how your networks, interests and ideas connect and intersect with peers and friends.This is demonstrated in the video below:
The new logo is made up by ornithology, simple geometry and overlapping circles. The new bird is not very different from the previous one, but I seriously love the new bird's simplicity.
Here is the old bird for comparing:
|The fat, old bird has a lighter colour, is tilted horizontally to the right, and has a light blue colour.|