WAY too much crow. A crow spawning EVERY TIME you log in? Now the FIRST SOUND we hear is CROW?
Too much crow, OUT OF BALANCE.
There needs to be a PER FIELD "poor man's" scare crow. Like broomstick, hay, and a nail (or some new windchime item made at an anvil). Put it in the corner of the field, and THAT ONE FIELD becomes crow-proof. After 30 days, the "makeshift scarecrow" de-spawns, and must be replaced.
The crow system, as it is now, needs to be re-thought. A neighbor walks by, and now ALL my fields take on 600% upkeep? Might as well destroy the field. And a couple month's purity gone. PAY to KEEP PLAYING (and have fields)? Not impressive.