For the past 9 months I have free ranged my birds on our 2 acre property. Occasionally a hen or two will wander over towards the neighbors yard. Really, occasionally and really only 1 bird maybe 2 go down there. Recently its been snowy here and our birds rarely have left the coop... Today my neighbor asked if we could keep the birds out of his yard and we said yes.. we were going to clip their wings as soon as the weather got nicer... He said that in the last few months, his dog has had bacterial infections from eating chicken poop... and it cost over 500dollars in vet bills. We immediately clipped their wings today.. but I have to ask... should I offer to pay some of the vet bill? The dog is always on a leash,, and with the weather being bad.. Im not sure that the dog could have been exposed to a lot of feces... I feel bad,, but we also have 5 dogs.. some of which have eaten poop... which we stopped immediately of course,, and we've never had problems.. I do not want a bad relationship with the neighbors,, but I cant say for sure that our birds caused this,,, what should I do?