i have 2 ducklings that are around 8-9 weeks old, and 4 that are about 3 weeks old. My 2 bigger ones are huge, and making a mess out of their enclosure in my basement. I'm ready for them to go out. They have almost all of their feathers except the feathers on the top of their heads. Can I put them outside? I'm in Pa, daytime temps right now stay between 65°-80°, night temps between 50°-60°.