The phrase "same feather" means that two or more people have similar characteristics, interests, or qualities. It refers to the idea that these individuals have a lot in common and are alike in some way. Full definition
I have several «umbrella strollers» and this is the same feather light feel, but more sturdy and multi-use. (happilyhughes.com)
In fact your joker leader even gave a Tundra to Akua Donkor to campaign for him in the 2012 general election since birds of the same feathers flock together. (ghanapoliticsonline.com)