Humidity for hatching

[bdchickens]

What should my humidity be at for hatching? I have been running 40-45 for days 1-18 and now I am at 70-75 . We are on day 20 and nothing has happened. We have seen some rocking here and there.

 

[Hillaire]

What should my humidity be at for hatching? I have been running 40-45 for days 1-18 and now I am at 70-75 . We are on day 20 and nothing has happened. We have seen some rocking here and there.

your humidity is fine it takes 21 days to hatch so the fact that you are seeing the eggs rocking is great. They're almost here give them time to do their thing

 

[Egghead_Jr]

Congratulations on eggs wiggling, wont be long now...

70-75% RH is a good place to be during hatching. The problem with humidity is during first 18 days if it's too high the air cell wont develop enough for the chicks head when it internally pips causing it to drown. 40-45% is not bad but for future hatches I suggest 30-35%. You can check your air cell when candling. If it's not progressing well at all take out water and if it's growing too fast add water.

The other problem with humidity is not everyone calibrates hygrometers. It's easy to do, search salt test, and gets those numbers to mean something. I've seen them off over 10%.

 

[bdchickens]

Great! Thank you!!