When it comes time to do birds photography, all eyes are turn on the telephoto lens model you are choosing to realize your pictures. And it is also obvious that such an optic has to give you at least a increase magnification of 10 times compare to your normal eyesight. That means for the Micro Four Third format something like a 250mm (10 X 25mm). But you can manage to install a more bird friendly and nearer (!) environment, with some bird tables (feeders) or baths that will allow you to be nearer of them as it is my case with the advantage to get a more predictable arrangement and a better rate of success.
Following my introduction of the use of the Olympus M.Zuiko ED 75-300mm F4.8-6.7 II telephoto zoom lens, it is my pleasure to offer you other interesting results in bird photography. Bird No.1: White-breasted nuthatch; Bird No.2: American Goldfinch (Male); Bird No.3 Blue Jay; Bird No.4: Evening grosbeak(Female)