They are both fine, the .22 is more versatile if you choose to use the gun for other things. In your specifically defined scenario (crows with an R1 at 20-30yds), my experience is the 25 is more effective. Close range is where a springer in .25 really shines. That said, I have .25's from 13ftlbs to 45 ftlbs and really enjoy the caliber, so am a bit biased. Either will work.
