Egg Candling with pictures

[L in Ontario]

Those of you that have gotten eggs with loose air bubbles in them, have they hatched or do they usually die early on?

I have a new pair with their first clutch and there seem to be bubbles in at least one egg.

And do you have any idea why this happens?

I believe loose or multiple small bubbles in an egg indicates a puncture/hole somewhere and external air has gotten inside. I always discard these.

[RomeoFinch]

Hi
My zebra finch female laid a double-yolked egg today. I was wandering if the egg was fertilised and it was incubated would it hatch? Is it even possible?
The egg is quite big - 1,71 g.

[ikhom]

It is a great shot. I tried to incubate my double-yolk egg, it was fertile, but it died after two days of incubation. I didn't expect it to hatch because it was just a bit heavier than the regular egg.
You can check this post too http://finchforum.com/viewtopic.php?f=4&t=7803&start=0
You can try to incuate it, but you can expect to get DIS only.
Was your hen young?

[RomeoFinch]

The hen isn't actually young. She is 2 years old. She normally lays eggs that weigh about 1,3 g. This egg was bigger. But also her yesterday's egg was enormously big (1,84 g), but it had 1 yolk.
I don't know if it is fertile. I put it under a hen that had infertile eggs. I will candle it in few days and see what's happening.

[RomeoFinch]

In the double-yolked egg there is only one embryo developing. Does it have a chance for living? What do you think?

[ikhom]

Wow, what a picture! We will know the answer in a day or two, but my guess would be that the dead embryo will kill alive.

[RomeoFinch]

I think that only one egg cell was fertilised and that's why only one embryo started developing. I won't be at home for 3 days, so I will check the egg on Saturday evening.

[lovemyfinch]

Very interesting turn of events.
I would think that the good embryo should be able to develop, as you can no longer even see that there was a second.

[RomeoFinch]

The chick from double egg has hatched It isn't bigger than an average hachling. You can see it in the middle between the older foster siblings ;)

[lovemyfinch]

[L in Ontario]

Beautiful - congrats on all three and especially the middle fid!

[Sally]

Wow, congrats!! That little one beat all the odds. So its smaller size is only because the two others are older?

[adnan]

gr8

[RomeoFinch]

Yes. The others are older. Unfortunately the little one died because it was't fed... The rest is ok.

[ac12]

I got one of those LED flashlights with the bendable neck that someone recommended. It works MUCH better than the mini-maglight that I used before. I can get it down to the egg easier inside the nest and then illuminate the egg from the side.

Thanks for the tip on the LED flashlight.