From the article: "The law says you can protect your livestock from predators. But in this case, police say, chickens are not considered livestock, so Harris has been charged with animal abuse and shooting a firearm in the city limits."
The first thing is that we don't know what his state ordinances say. You need to KNOW your ordinances and animal laws. I'm sure we have all had to look them up at one time or another. Mine clearly lists chickens, and if yours does too, you're safe there. Mine also states that dogs at large can be shot if they are a threat to private property (so the chickens could be regarded as private property as well).
The second thing is that he was within the city limits, which changes the situation quite a bit if it's illegal for him to shoot there.
The third thing is, he hasn't gone to court yet. I will find it hard to believe that he will be prosecuted for protecting his property. But again, it depends on the law in his state.
This is why we should all know what are rights are according to the laws and ordinances in our counties.
I'm sure he will be found guilty of shooting a firearm in the city limits. But his lawyer might be able to prove that his chickens are livestock. And there might be another ordinance out there regarding pets. There should be something about protecting your private property too. He would be wise to file a counter-complaint about the dogs trespassing and not being contained.
Arrested does not mean "guilty". I hope someone follows it and gets back to us, the outcome will be interesting I'm sure.
Edited to add:
I don't know who posted this in the comments section of the article, but there is a referenced ordinance that may have the PD charged for false arrest. See (5):
599.205 Definitions. As used in this chapter, unless the context otherwise requires:
(1) Dairy cattle includes the recognized breeds of bovine animals used primarily for the production of milk, such as, but not limited to, Jersey, Guernsey, Brown Swiss, Ayrshire, Milking Shorthorn, Holstein and Red Polled, whether or not such animals are purebred or grade, and crosses of such breeds, including crosses of such breeds with beef type animals.
(2) Department means the State Department of Agriculture of the State of Oregon.
(3) Director means the director of the department.
(4) Licensee means any person who operates a livestock auction market, either as owner or lessee, and who holds a license to conduct such market issued by the department pursuant to the provisions of this chapter.
(5) Livestock includes horses, mules, asses, cattle, sheep, swine, goats and poultry, including turkeys, of any age or sex.