Hen due date

[volt_4x]

I had a hen start sitting on some eggs June 7 in the afternoon and wanted to see if anyone knows when the earliest a egg can hatch and latest

 

[CoopBoots]

Incubation takes about 21 days. Earliest I'd expect a baby is 20 days after she started to sit. Now, latest day of hatch can vary, but it isn't usually much past 21 days unless she layed additional eggs after June 7th or another hen added eggs after that date. Did you separate her from your flock or mark her original eggs to prevent accidental additions?

 

[volt_4x]

Incubation takes about 21 days. Earliest I'd expect a baby is 20 days after she started to sit. Now, latest day of hatch can vary, but it isn't usually much past 21 days unless she layed additional eggs after June 7th or another hen added eggs after that date. Did you separate her from your flock or mark her original eggs to prevent accidental additions?

At first we marked them put soon discovered additional eggs so than we separated her