Actually, I am an attorney--but not in practice and not licensed in Indiana (was licensed in Illinois another life ago). If anyone has a situation like this nightmare dog attack, the owner is entitled to compensation for any and all damages caused by the non-owned dog that can be proven (including the value of the birds, fixing damaged fence/coop), and especially human injuries. Even if you have insurance that pays most of all of your medical bills, you can sue the dog's owner for all of your medical expenses, lost wages, pain and suffering. This is generally called a tort claim (as opposed to a criminal complaint). All of the different damages are calculated separately--what you can get for the loss of your birds will not be great, it will their fair market value. But the big bucks to be made are in the payment of medical bills (at least recovering your out of pocket expenses, and often the full amount--which your insurance company will want back in most cases), but your pain and suffering can be significant.
I would generally advise AGAINST using the attorneys or firms that advertise on television. Ask around--you never know who might know a good personal injury/tort attorney. You can also check on a website called
www.avvo.com (which some attorneys hate, and I have personally tried it with mixed results for finding the occasional attorney for myself, when there is a matter beyond my skills). The state bar association of each state can make a list available to you, and if you check their website, if you see that someone is the chairperson of the personal injury bar committee, that might be a person/firm to at least sit down with.
Most personal injury attorneys will give you a free consultation.
If all you have lost is some birds, your best bet is to file a police report, remove but do not bury your birds until they come out and talk to you, and file against the dog owner in small claims court. Most attorneys wouldn't take a "dead chickien" case by itself, but they would probably add it in with a personal injury case.
Personal injury attorneys generally keep 1/3 of whatever you are ultimately awarded, and do not charge you more than costs (like filing fees, photocopies, etc.) even if you lose.
When you go to small claims court, you generally represent yourself, and show up with all the evidence you have (which will include receipts for the birds, fair value estimates for adult birds based on going prices at swaps, eBay, here, etc.), high resolution big photographs of all injuries, damage, and dead birds, veterinary bills for birds that died afterward from their injuries, etc.
Jeez, maybe I should write an article about this and submit it to one of the poultry magazines! I hope this helps. I tell people MY advice is worth what you pay for it sometimes, which is nothing, but I've had some luck walking my friends through some legal jams of various kinds.
(And yes, I know it is totally crazy that I am a veterinarian and inactive attorney, but it's the truth. There aren't many of us!)