Our friends at Bittbox know just what ruffles your feathers. They consistently pump out useful tutorials, interviews and enough freebies to choke an ostrich. 
Here is another generous giveaway. If you have not already – stop what you’re doing right now and bookmark their site. They are the Obi wan to our Luke Skywalker and we think they’re pretty terrific.
 

birds silhouettes in flight vector download