It sounds like your hen has made a great recovery, which is wonderful to hear! Given the warmer temperatures you're experiencing, it might be safe to transition her back outside, but there are a few things to consider:
- Check for Full Recovery: Before reintroducing her to the flock, make sure she’s fully recovered. Her energy levels should be back to normal, and she should be eating, drinking, and interacting with you and the environment like she did before the illness. If she seems weak or shows signs of stress, it’s best to wait a little longer.
- Monitor for Respiratory Symptoms: Even though she's more energetic, keep an eye on her for any signs of respiratory distress, like labored breathing, coughing, or sneezing. If any symptoms return, it's a sign she may need more time to fully heal.
- Watch for Social Behavior: When reintroducing her, observe how she interacts with the other hens. A smooth transition is key, so if they pick on her or she’s overly stressed, it might be a sign that she’s not quite ready to rejoin the flock. You might want to try gradual introductions.
- Gradual Reintroduction: Consider letting her spend some time outside in the yard (near the others, but separated) so she can see and hear them, but isn’t directly interacting just yet. This allows the flock to adjust to her return. Gradually increase the time they are together.
- Watch for Aggression: The other hens may be territorial or a little wary of her return, so monitor how they react. If they show aggressive behavior, like pecking or bullying her, it might be best to separate her again until things calm down.
- Good Weather Conditions: Since the weather is mild, it’s a good time to reintroduce her. Sudden weather changes (like cold or wet conditions) could add extra stress, so the warmer temps will help her adjust more easily.
- Keep an Eye on Her Stress Levels: If she seems overwhelmed or out of breath after interacting with the flock, bring her back inside for a rest. Stress can slow down her full recovery.