Help candling eggs?

[Velarisduckmom]

My sweet runner, Avocado, has been broody for a week. I was finally able to candle today, but it's my first time and I'm not so sure! Any help reading this would be greatly appreciated.

I made an imgur gallery so they're not all on here! Not the best pictures, sorry in advance!

GALLERY

 

[sarahgray18]

Those all look like they're developing to me!

 

[Nananola]

After candling my duck eggs after 7 days they all show good but only about 1/2 hatch, what might be the problem??

 

[Nananola]

After candling my duck eggs after 7 days they all show good but only about 1/2 hatch, what might be the problem??

 

[Nananola]

Does no one answer questions on here anymore??

 

[sarahgray18]

Sorry, I haven't logged on in a while and just saw this. Did you candle again after the 7 day mark? They might've quit after this period if you didn't candle afterwards.

I haven't dealt with broody hens, but I have gone through quite a few successful hatches with an incubator. Here are a few of my ideas.

I try to candle my eggs at least once a week (or more) to check for any quitters. If quitters are kept under heat, they can actually ooze or explode, and since eggs are porous, this can potentially "infect" and affect the other eggs. I think broody hens usually remove the bad eggs from their clutch, but first-time moms or ones that don't exactly know what they're doing might not do this, so it could affect your hatch.

Also, with an incubator, we can leave the eggs that might be a couple of days behind to give them a chance or assist, while broody hens will likely get off the nest shortly after some ducklings have hatched.