I mentioned a while back in this series that we use a scrap of t-shirt fabric to help wick water up from the wells (increasing surface area of the water) to increase humidity as shown above. Well we are well past the halfway point of our 21-day incubation, and from this point on, you may or may not need the extra humidity assistance to keep the levels stable. The chicks in the eggs start putting off their own heat and humidity as they get further along in their developing, so keep an eye on the levels in your incubator and make changes as needed.
On Day 13:
- Wing feathers are developing
- Collar bones begin to fuse to the "wishbone"