Matilda Belle
Crowing
Could I suggest a slightly different approach? Having a conversation with this neighbor can lead to arguments and different opinions. Perhaps a carefully worded letter delivered by registered mail? Explain that your were told your had the right to shoot the dog and that 3 attempts to get at your chicken, animal control will take him. Explain that you don't want to do these things and have their family pet taken away, but at the same time, this chickens are your pets and the dog is interfering with your ability to enjoy them. Ask them to get the dog off of your land but that is the pricier persisted, you'll be forced to follow animal control's advice.
That way, no confrontation. And you'd have record of the delivery of the letter. Then - take a picture of the dog anytime he's there, and call animal control after the 3rd time, call animal control.
That's a great idea. I'd also include language on how much you will charge for each chicken that is injured and/or killed, and put that price way up there like maybe $75-100 per chicken depending on age/breed. Just another idea.