I reckon they waited until you went to work so they could have a bit of lovey-dovey time home alone! 
If Dora is sitting on the egg, she either knows it's going to hatch, or she is going broody.
My mind flashes back to my grandad (late 1950s) telling me to keep away from a shed where there was a "Broody Hen"!
From that moment on, I heeded the warning but unfortunately equated "Broody Hen" with "Hyena on the warpath".....
I used to have bad dreams about Broody Hens chasing me over endless landscapes.....
I hope the egg hatches! And you hear the flutter of tiny wings soon!
If Dora is sitting on the egg, she either knows it's going to hatch, or she is going broody.
My mind flashes back to my grandad (late 1950s) telling me to keep away from a shed where there was a "Broody Hen"!
From that moment on, I heeded the warning but unfortunately equated "Broody Hen" with "Hyena on the warpath".....
I used to have bad dreams about Broody Hens chasing me over endless landscapes.....
I hope the egg hatches! And you hear the flutter of tiny wings soon!
