just wanted to say this i dont know about your school district but for FFA they have a poultry judging team and they are always looking for different types of birds so the kids can learn all about them. if the 4H thing doesnt work out LOOK INTO THIS most of the Agricultural teachers in school are always trying to find ways to get their kids to learn better and you can talk to him/her about being an honorary FFA member. lol they did it where i am. if you need more info pm me and i can try adn help you.
I am a City Planner and I often have to give people the bad news, but I wont stick-up for this crab. I would go down there and ask for 3 things and go through them:
1. Official zoning map
Make sure you are zoned what she said
2. Copy of the ordinance
Make sure the ordinance precludes them in your area
3. List of the County Commissioners (or whatever they are called there)
Contact the Commissioners and maybe the County administrator to see if there may be support for looking at changing the ordinance (it is not the constitution you know) also, explain to them the interaction you have had with the crab.