hi every one iv just bort my first dslr(sony alpha a200) and i *** like to take sum wildlife shots (manely birds) i was wundering what sort of lens *** b best for the job as the sigma zoom af-apo 70~210mm i bort with the camera duse not seem up to the job.im greatful of any advice as i am very very new to the world of camera's.cheers


