I personally have seen what can happen when quarantine periods are not observed. Many on here have not observed a quarantine period without any adverse results, however, there are quite a few posts that the opposite is true. It just depends on whether you want to take the risk with your healthy, established flock. You only have 1 more week to go, before you can start introductions, so hang in there. Pecking order, and bullying are not issues that always disappear immediately, even when free ranging, especially when there are age differences. There are plenty of posts regarding introducing new members to your flock. Introductions may take a little time. Be patient.
Parasites, both external, and internal is just a small portion of what you should be checking for. Here is a list of routine things to check. I do not claim this is a complete list, and others may offer more things to check too, but this is a good start.
Pick each one up daily, and check for the following:
Lice, and mites
Listen to their breathing, no rattles, or congestion
Check their nostrils, no discharge
Look at their eyes, bright and clear, no bubbles, or discharge
Look a their combs, and wattles for normal coloring for their age, no white powdery places, no scabs, no stick tight fleas.
Check their legs, scales laying down tight.
Check their vents, no foul odor, no pasty butt, or discharge, no redness or swelling.
Keep track of food, and water to make sure they are eating, and drinking properly. When introducing new flock members, provide extra waterers, and feeders at opposite ends of their area to ensure they all get food, and water. You may put an obstacle, (ie. part of a hay bale, or a whole one), space permitting, towards the center for the younger ones to escape to the bullying, and hide behind.
Check faces for swelling
Check for strong and/or foul odor
Check pooh
