Candling photos and stages of development- info compilation (pics!)

[Mrs MIA]

I think some people factor it in... I usually candle just before putting the eggs in the hatcher, so my hatch rate is usually calculated by the number of eggs that hatch from the number I set in the hatcher. But technically, it should be however many hatch from the number you set in the incubator from the git-go.

It's possible that there was something wrong with the chicks, and that's why they quit. I have a brand new digital incubator, and I still have eggs that quit. It happens.

 

[pax12]

day 1 to 21

 

[Mrs MIA]

Quote:
It's cool to see them in a slideshow like that, but those are the same photos from the Univ. of Nebraska site linked to in the first post.

 

[momofdrew]

AK
this is day 14 of my girl setting on 6 eggs I tried candling 3 tonight 2 looked like your day14 egg with dark space and a air pocket the other is too dense to see through...I didnt do the other 3 cause she was getting upset... this will be our first hatch...keep your fingers crossed for us

 

[LilRalphieRoosmama]

Great post - thanks for making it a sticky!!!!

 

[Mrs MIA]

Quote:

Yay for first hatches!!!

 

[chantecler]

Thank you so much for the helpful information!!!

 

[pax12]

Mrs. AK-Bird-Brain :

Quote:
It's cool to see them in a slideshow like that, but those are the same photos from the Univ. of Nebraska site linked to in the first post.

i didnt see that there​

 

[chicky chicky bok bok]

Mrs. AK-Bird-Brain :

With Spring around the corner all thoughts are turning to ......... hatching chicks!

For the members that are old hands at this, please feel free to add your candling photos, or photos of chicks that quit before hatching that you decided to take photos of. For the newbies, welcome to the chicken addiction!

Here is a quick rundown on some of the terms you will hear thrown around regarding hatching, and what you can expect from your first hatching project.

First... the terminology...

CANDLING - this is the method for seeing into a developing egg. Usually people will use a pen-light in a dark room, and shine the light down on the large end of the egg to see what's happening inside. Some eggs are harder to see into, such as the marans or ameraucana eggs. But white and brown eggs are easy to see into. Here's a fresh egg.
(click on photos to enlarge)
[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/Copyrighted%20photos/th_Freshegg-copyright.jpg[/URL]
If you have eggs shipped in, you will want to do a quick candling on them to make sure there are no cracks. Finely cracked eggs can hatch, either left alone or sealed up with a bit of plain wax. The candler in this picture is made from a porcelain ceiling socket under a large metal coffee can.
[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/th_P5090011.jpg[/URL] The boys made it for me, and it works great.
Do a search here on BYC for other ideas on homemade candlers if you don't want to buy one.

POROUS shell: a shell with larger than normal holes in it; looks like this:
[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/th_P5150041-PorousDorkingegg.jpg[/URL]
Porous eggs will hatch just as well as others. However, it is believed that a lot more moisture can be lost through the shell this way, and the humidity might need to be increased to compensate. If you notice the airsac getting really large really fast, you might try raising the humidity 5%.

If all goes well, by day 7-8, you should see VEINS like this:
[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/Copyrighted%20photos/th_8dayoldembryo-copyright.jpg[/URL]
This is an egg on day 8. Usually starting at day 3 in the incubation process, you will start to see actual faint veins. Sometimes it will take a little longer for them to develop... be patient, let it happen. I think a good number of people will candle the first time at day 7, and mark a "?" on any eggs that they're not sure about. If, at day 7, your egg still looks like the fresh egg above, then it is probably not going to hatch and can be removed. Some people like to leave them in a little longer, and candle again at day 14, or even day 18 before putting the eggs in the hatcher, and then make the decision to remove. However, the rule of thumb is a) if it's smelly, or b) if it's weeping - throw it out! It may explode if left in the incubator, and it will ruin the entire hatch.

Here's an egg on day 10:
[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/th_10dayoldegg.jpg[/URL]

By day 14, the egg should look like this:
[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/th_smallerbrownegg-14days.jpg[/URL]
By the time you stop turning, all you should be seeing is the airsac... the rest should be crammed with chick!

Sometimes bacteria gets in the egg and kills the embryo. When this happens, you will sometimes see a BLOOD RING:

[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/Copyrighted%20photos/th_Bloodring-copyright.jpg[/URL]
This egg is also at day 8, and was set with the one showing the veins. It is obvious that this one is not going to hatch.

Last candling should be at day 18, if you're going to do it, because this is the day you stop turning the eggs. Whether you're using a hatcher or not, that's when you stop turning and raise the humidity and then sit. on. your. hands. and. leave. the. incubator. alone. Then, if everything goes as planned, somewhere around day 21 there should be little fuzzybutts trying to make their entrance into the world and your heart!

PIP - this usually happens around day 21, and is when the chick first pokes a small hole through the membrane and breaks the shell.

[URL]http://i90.photobucket.com/albums/k270/vyancey/Chickens/th_11-23-07-51100-rs.jpg[/URL]

This takes a LOT of effort for this little chick. (Every time I see the movie "Kill Bill", the scene where she's trying to bust out of the coffin reminds me of what it must be like for these little chicks. Try doing it with YOUR nose!

)
After the pip, it can take either a short time, or a long time for them to zip... it just depends on their energy levels. I've had quail that took 3 days to zip and hatch after pipping. Just be patient. Leave them alone. Go for a drive. Go fold laundry. I know... it's hard. I'm guilty of multiple nose-smudges on the incubator window. But the best hatches are usually the ones you come home to.

So, now you ask... what is this ZIPPING?
Zipping is where they start at the little pip-hole, and work their way around the egg to create the little trap-door that they push out of.

Here's a Button quail egg zipping...
[URL]http://i90.photobucket.com/albums/k270/vyancey/Quail/th_P4210013.jpg[/URL]

It sort of looks like a zipper being unzipped, hence the term, and should occur on the large end of the egg. Chicks have been known to hatch after pipping/zipping on the pointy-end, but sometimes need a little help. This also can take 5 minutes, or can take HOURS. Sometimes it just seems like it takes hours, too.

But if the humidity and temps are in range, then the chick should be able to push out on its own, whether it takes 15 minutes or 3 days. I firmly believe that a chick NEEDS to do all the pushing and grunting and swearing to get out of the egg. It's what gets the blood pumping. A lot of people believe that a chick was not meant to survive if it can't make it out of the egg. To help or not to help is your choice, but I can vouch for the fact that 95% of the chicks I've had to help had defects that prevented them from thriving anyway. Sometimes it's best to let Mother Nature take control.

Here's the growth of a chick from 1 day to 16 weeks old...

Here are some links to photos of egg development:
My favorite site is the University of Nebraska's site . They have a 'bator-cam that is trained on the incubator so you can watch chicks hatch. It's great!

More pics here

and here

More helpful information on hatching egg care here and here

Don't want to buy an incubator? Want a project you can use as a learning tool for your kids? Check out Miss Prissy's chick'o'bator ... it can be made with most spare parts found in the garage, and takes only a few hours to put together. Best of all, it WORKS!

"Chickens are like potato chips... you can't have just one." ~ anonymous hatchaholic

OK, I am a newbee hatcher. I am borrowing a friends hova bator and we just sort of just started. I looked at the eggs yesterday and again today and I can only see through about 1/3 of the egg. The other half is too dark for light to pass through. I can't see any veins, but maybe my light is not strong enough. All I see is a dark mass and then a little air sac in the bottom if I turn it to the side. Does this sound on track for day 7/8?​

 

[LilRalphieRoosmama]

By day 7 or day 8 you should see veins and a small black spot, perhaps the size of a pencil eraser at the big end of the egg under the air sac which is the chick. Sometimes you can see it moving too. Your light may not be bright enough. Also - the eggs are very fragile at this point so you should take care to never hold the egg with the big end down. It should always be up, or if you have the eggs laying on their sides in the bator, I would gently pick them up, candle them as they were laying, and set them back down. When you turn them, turn them side to side and not end over end. You don't want to disturb the air sac.

Good luck with your hatch and keep us posted!