Twitter recently updated its iOS app with a really cool startup animation that transitions from the Default.png to the timeline view. The animation uses the Twitter bird as a window into the timeline view, and then zooms it in. Here’s a demo: Replicating the basic animation it is fairly easy. To make the starting point as simple as possible, I used a screenshot of my timeline rather than a full-bl
![Replicating Twitter's bird zoom startup animation (in Swift!)](https://cdn-ak-scissors.b.st-hatena.com/image/square/ff81c7f88f5c33f0918c7daaf90d66288d15ffdf/height=288;version=1;width=512/https%3A%2F%2F64.media.tumblr.com%2Fdc18fe45574cd486a2c7a2d5b72cc443%2Ftumblr_inline_n6zoo1ve6a1qh9cw7.gif)