Greetings DCluck,
There is so much to learn about caring for chickens. But, I think learning how to give medical care for injuries and illness, is probably the most difficult.
First, as you have already learned, diagnosing in itself is a huge challenge. A wrong diagnosis, may lead you to provide the wrong treatment. Sometimes, you diagnose correctly and the chicken still dies. This is because there are other factors to consider in the healing of a chicken, as I mentioned before.
So, whether you start with older chickens or chicks from a hatchery, chickens get sick. That's because we can't fully control the microbial world.
Of course, hatchery chicks will be a safer bet, but you should always have them vaccinated for Marek's. Practicing good bio security is also a must, in protecting your flock from disease. And, if you do bring in pullets or older chickens, always quarantine them. The minimum quarantine duration is 2 weeks. But, I don't think this is good enough. Each keeper has their own procedure. Check with your local state or county agriculture dept. to find out if Marek's is prevalent in your area.
Reading books on chicken health and care is also essential, if you don't have a vet to help you. The internet has a lot of helpful information, and, there is also a lot of inaccurate information. So a good book is a valuable resource, for a keeper, to refer to.
In the end, you will have to diagnose and treat your chickens when they get sick. If you do nothing they will get worse, or maybe die. Or, maybe they'll heal, some things are not so serious. But, if you help your chicken, they have a better chance of survival, than if you do nothing. As you become more experienced, you'll know what and when, to do things for your flock.
So, don't worry so much. Enjoy your flock and post some pictures here on BYC. We'd love to see them!
God Bless
There is so much to learn about caring for chickens. But, I think learning how to give medical care for injuries and illness, is probably the most difficult.
First, as you have already learned, diagnosing in itself is a huge challenge. A wrong diagnosis, may lead you to provide the wrong treatment. Sometimes, you diagnose correctly and the chicken still dies. This is because there are other factors to consider in the healing of a chicken, as I mentioned before.
So, whether you start with older chickens or chicks from a hatchery, chickens get sick. That's because we can't fully control the microbial world.

Of course, hatchery chicks will be a safer bet, but you should always have them vaccinated for Marek's. Practicing good bio security is also a must, in protecting your flock from disease. And, if you do bring in pullets or older chickens, always quarantine them. The minimum quarantine duration is 2 weeks. But, I don't think this is good enough. Each keeper has their own procedure. Check with your local state or county agriculture dept. to find out if Marek's is prevalent in your area.
Reading books on chicken health and care is also essential, if you don't have a vet to help you. The internet has a lot of helpful information, and, there is also a lot of inaccurate information. So a good book is a valuable resource, for a keeper, to refer to.
In the end, you will have to diagnose and treat your chickens when they get sick. If you do nothing they will get worse, or maybe die. Or, maybe they'll heal, some things are not so serious. But, if you help your chicken, they have a better chance of survival, than if you do nothing. As you become more experienced, you'll know what and when, to do things for your flock.
So, don't worry so much. Enjoy your flock and post some pictures here on BYC. We'd love to see them!

God Bless
