Duck egg day 28/29 Air sac bigger

Saaan13

Chirping
Jul 6, 2022
45
28
51
Its probably the draw down for hatch which is normal. Whay breed of duck is it? are you using a calibrated thermometer?
I’m not sure what breed there are 6 different ones the person I got them from said and I’m using a digital thermometer with a probe , i used it on my chick which hatched ok so I think it’s calibrated.

Glad to know it’s the draw down , well I hope it is :)
 

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