Ok..so ive heard that guineas are good for bug control... how good?? Weve got these annoying flying things that hover around in the chicken coop at about head height.. not flys.... but not sure what they are.. very annoying though.. And.. my neighbor has guineas... will mine fly over to her place to be with hers or will they stick around? My chicken pen is not covered.. parts of it is.. but only where there are going to be babies.. once there adults, no cover...And the chickens/ducks/geese free range in a small pasture during the day.. Anything you want to tell me is helpful.. Thanks.