mom abandoning eggs

So I had a muscovy duck sit on 6 eggs, shes been sitting for around 3 weeks now, candled them and only 1 is growing. I took two eggs away as they was rotten and smelt bad. Shes abandoned the nest since I removed them, she was off the nest for 5 hours till I noticed, the eggs was cold. Since I...

So our White Leghorn in this pic isn’t the actual momma.. she hatched 11 of her Babies under our trailer (roadside) and has been an amazing mother, teaching them all they need to know! 4 weeks later, this morning she left them and flew over 3 fences to come back and lay more! Side note: her...

We have a broody chicken so I got four fertilized eggs from a friend. About 7 days in I found an egg out of the nest and cracked. Upon inspection, there was nothing growing in it so I figured that was why. However yesterday another egg was knocked out of the nest (looked like it had been...