Why Are My Pigeon Eggs Not Hatching?

An egg that fails is either infertile or the chick died at a particular stage, and the timing usually points to the cause. How to work out which, and what to change.

two white pigeon eggs in a nest

A few eggs fail in every loft. If more than about one egg in twenty fails to hatch, though, something in the loft needs changing. The good news is that the stage at which an egg fails usually tells you where to look.

What should happen

The hen usually lays her first egg about ten days after pairing and the second about two days later. The pair sit properly once the second egg arrives, and the 18 days of incubation are counted from then. The first chick usually hatches on about day 18 and the second the next day.

Check the eggs

Hold an egg up to a bright torch in a dark room (candling). From about day 5 you should see red blood vessels spreading from a dark spot. After about day 10 a healthy egg looks dark apart from the air space at the blunt end. An egg that stays clear has not developed. An egg that looked alive and then shows a blood ring, cloudy contents or no change has died.

What the timing tells you

What you find

Likely causes

What to change

Clear egg, no development

Infertile: an old cock, a hen with an oviduct infection, fat birds, shortage of vitamins A, E or selenium, mould in the feed, or medicines and vaccines given too close to pairing. An egg chilled or shaken before sitting began looks the same.

Bring birds into condition, not fat. Finish vaccinations 6–8 weeks before pairing. Avoid unnecessary medicines. Use fresh, sound grain and give greens.

Died in the first few days

Chilling, because the parents left the nest (mites, disturbance, crowding, a poor nest), or eggs shaken when moved. Inherited faults, more likely in closely related pairs.

Keep the breeding section calm and uncrowded, treat for mites before pairing, handle eggs gently, and avoid pairing close relatives.

Died in the middle (about days 4–14)

The hen's diet: a yolk short of nutrients. Sometimes infection.

Improve the breeding mix (see below). If it keeps happening, ask a vet.

Died in the last days, or the chick broke the shell but could not get out

A nest that is too hot and dry, so the membrane hardens and the chick becomes exhausted.

Raise humidity near hatching: give the parents a bath and mist lightly in dry weather.

Dark, black or smelly egg

Bacterial infection, often getting in through a dirty or damp nest or a thin shell, and sometimes from the hen.

Clean nests, fresh nest material every round, and ask a vet to check the birds.

Get the nest right

During sitting, aim for a nest of about 20–25°C with humidity around 55–60%, rising to around 70–75% in the last two or three days. A cheap digital hygrometer from a garden centre will tell you where you stand. Giving the sitting birds a bath lets them carry moisture back to the eggs.

Use dry, mould-free nest material such as short hay or dried grass, not straw, which is slippery and often mouldy, and use fresh material for each round. Lice and mites can drive parents off the nest, so deal with them before pairing.

Feed the hen for the job

A mix of two or three grains plus grit is not enough for a breeding hen. Aim for a mix with about 18% protein, raised with peas, beans and tares, and give dark greens for vitamin A. Hens need calcium from shell grit, and vitamin D to absorb it, especially in the dull months before spring. Rough or thin shells, or faint see-through bands on the shell, are an early sign she is short of calcium.

Two myths

  • Thunderstorms kill eggs. They don't. Shaking an egg, for example when moving it to foster parents, really can.
  • A struggling chick should be helped out. Usually not. A chick that cannot hatch on its own is often weak or infected, and peeling the shell can make it bleed. The exception is a chick stuck in a very dry shell: an experienced breeder or vet may suggest moistening the membrane.

Questions

How long do pigeon eggs take to hatch?
About 18 days, counted from the second egg. The first chick usually hatches on about day 18 and the second the following day.
How can I tell if a pigeon egg is fertile?
Candle it with a bright torch in a dark room from about day 5. A fertile egg shows red blood vessels spreading from a dark spot; an infertile egg stays clear.
Do thunderstorms kill pigeon eggs?
No. That is a myth. Shaking or jarring an egg, for example when moving it, can kill the embryo.

Sources

  1. Zsolt Talabér, Breeding Season (Pigeon Doctor Series), pp. 55–60, 63–79, 101–104, 129–150
  2. Zsolt Talabér (ed.), Vets’ Tips for Fanciers, pp. 26–40, 45–49, 218, 244

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