This varies somewhat depending on the type of finch. Usually around 14 days of incubation, but a general range can span 12-18 days. Note that incubation does not begin until the parents start sitting, which frequently will not happen until the 3rd or 4th egg is laid, or sometimes the entire clutch.

The female lays one egg a day. After she lays the last egg there is a two week gestation period before hatching. (Incubation does not start until all the eggs are laid.)

It takes between 29 and 31 days for the eggs to hatch. Both sexes incubate. A Whooping Crane pair will renest if the first clutch of eggs is destroyed before mid-incubation.

I incubate my eggs at a temperature of 82F, and they take an average of 52 days to hatch. If you use a hotter temperature, they will generally take less time, and cooler temp take longer.

Although there is individual variation, approximately 80% of the chicks will hatch within 15 hours after the first chick hatches (slightly less for waterfowl). A hatch should be completed within 24 hours. Hold eggs that have not hatched by this time to your ear. You can assume the egg will not hatch if you do not hear movement. Or better yet, candle them to determine the progress. Smaller eggs in a lot hatch faster than the larger eggs.

Young worms hatch from their cocoons in three weeks to five months as the gestation period varies for different species of worms. Conditions like temperature and soil moisture factor in here...if conditions are not great then hatching is delayed.

About 30 hours, but it varies with the species. Cracks will appear a couple hours before the egg hatches.

Depends on the species. 10-20 days, average is 13 days from the start of incubation. The start of incubation is not the same time you see the first egg. Incubation usually starts after the last egg in laid.

Yes, assuming conditions are good in your tank, they should hatch. It takes about 4 weeks from the time the eggs are laid to the time you will be able to see the Berghia well with the naked eye.

If the temperature is 95 F and there is 70% humidity, half of all flea eggs hatch within 36 hours. If it is only 55 F, half of all flea eggs will hatch within 6 days.

Robins incubate their eggs for 12 to 14 days. Once hatched, the nestlings remain in the nest for another 14 to 16 days before fledging.

If the incubator has a fan to circulate the air, you want it at 100F. If the incubator is still air then you need to have the temperature at about 103F measured at the TOP of the eggs. In this kind of incubator, you will need to make sure that all the eggs are the same size or else the bigger ones will get too hot and the smaller ones will be too cold. Don't forget to turn the eggs at least three times each day and to make sure you have a water dish always filled for humidity. Good luck!

I would never personally set double yolk eggs. I have seen deformed chicks in them, but never any that hatched. Sort of like "Siamese twin" chicks, if you like. It's not worth the trouble.

It is probable that only 90 percent or less of incubated eggs are fertile. (Not all 90% of eggs will hatch either). Removal of eggs that can be identified as infertile or dead eliminates possible sources of contamination from the incubator. White or pale eggs are more easily candled than dark or speckled eggs. Many people use small flashlights with lenses that can be focused to candle eggs. Excellent candlers also can be purchased at a reasonable cost.

Answer: My simple answer would have to be no, but bear in mind that in a few cases I've accidentally forgotten a hatch and had it turn out alright. I do, however, consider those cases to be the exception, rather than the rule. Some bantams seem to sense, probably due to the hatchling's vocalizations that they are not chickens and will proceed to kill or desert the chicks.

The hen lays five to seven eggs. On occasions, eight eggs may be laid. Incubation commences on the laying of the fifth egg. The incubation period is 14-15 days.

Depending on the species, incubation lengths range from 65 days for Emperor penguins to 33 days for little blue penguins.

Most parrots take 26 days after incubation starts. Cockatiels and some smaller birds take from 18-21 days to hatch. Sometimes the mother hen will wait until all her eggs are laid, the she will start sitting. Some will start sitting from the time they lay their first egg. Its best to try to date the egg lightly in pencil at the wide end of the egg, but you must be very careful and not press too hard, you don't want to break through the shell.

For most breeds of ducks the eggs are incubated for 25 days at a dry bulb temperature of 37.5 C (99.5 F) and a wet bulb temperature of 29.4 - 30.0 C (85 to 86 F) then transferred to the incubator hatcher where the temperature is held at a dry bulb temperature of 36.9 C (98.5 F) and a wet bulb temperature of 34.4 C (94 F) till they hatch on day 28. During incubation the eggs should be turned at least three times daily. Muscovy ducks take 35 to 37 days to hatch.

first, fertile and infertile eggs will look the same. After about 4-7 days from the last egg being laid, you can candle an egg (using an egg candler or a small flashlight) to tell whether or not it is fertile. A fertile egg will have a network of vessels running through it. Infertile eggs are clear with a little yellow spot where the yolk is. As time passes, fertile eggs will take on a blue/grey color (as the embryo grows inside).

I receive many finch or bird related e-mails each day. Some are really good questions, showing that the owner generally wants to do what is best for their bird but needs a little help on the basics. Others are more advanced questions that need in depth answers and usually require several e-mails back and forth to straighten everything out. Then there are the questions that really only need a little common sense to answer.

Unlike men, who produce new sperm daily throughout most of their lifetime, women are born with a specific number of undeveloped eggs (around one to two million) in their ovaries. When a female reaches puberty and starts menstruating, only about 300,000 immature egg cells, or follicles, still remain. Some of these begin to develop with each monthly cycle. At this time, only one follicle matures into an ovum (egg) and bursts from an ovary into the fallopian tubes, initiating ovulation.

No product on the market will kill 100% of the eggs; however, with the residual left in the hair, any nits that are left will probably die shortly after hatching. We always recommend removing all of the nits to most effectively eliminate lice.

Eventually, they do stop incubating. When we used to remove thin-shelled eggs from wild nests for captive incubation, and replace them with artificial eggs, we knew we had to replace the latter with chicks at or near the "due date", or the adults would have abandoned the nest and not accepted the fostered chicks.

If they're a new "couple", give them a few chances to "get it right". First-time discus parents often don't figure out what to do for the first few spawns. If this doesn't work, you might try removing one parent and seeing if the other one will take care of the fry. If both parents are eating the fry your only real choice is to raise thr fry artificially, but this is a lot of work and they require constant attention. Jack Wattley describes how this is done in one of his books.

If you keep your eggs in the fridge they should stay in good shape for at least six weeks. If you store them at room temperature they’ll last only about a week. Usually the ‘use by’ or ‘best before’ date stamped on egg cartons corresponds to four weeks after packing, so from that you can work out how old your eggs are when you buy them.

A female head louse produces about four eggs per day and a total of about 88 eggs during her lifetime.