How do I prepare shipped hatching eggs before incubating?

Unpack them carefully and let them **rest large-end up in a carton for 8–24 hours** at room temperature so air cells shaken loose in transit can re-settle, and so cold eggs warm up without sweating. Candle each egg to grade air-cell damage: set intact ones normally, but incubate **wobbly or detached ('saddled') air cells upright in a carton for the first week**, hand-tilting gently instead of using a turner. Expect only about a **50% hatch** even when everything is done right — jostling and temperature swings in the mail cause most losses — so **set more eggs than you need**.

How long should shipped eggs rest before setting?

**8–24 hours**, large-end up and pointed-end down, at room temperature. This lets disturbed air cells re-settle and lets cold eggs warm gradually so the shells don't sweat when they go into the incubator.

Should shipped eggs point up or down while resting?

**Large end (rounded end) up, pointed end down.** The air cell lives at the large end, so keeping it uppermost during the rest helps it re-settle against the shell.

What is a 'saddled' or detached air cell?

It's an air cell knocked loose from the membrane in transit. A **saddled** air cell slides down one side or wobbles like a bubble level when you tilt the egg; a **detached** one drifts freely. These eggs can hatch, but they should be incubated **upright in a carton** for at least the first week so the embryo develops against a stable air cell.

Why is my shipped-egg hatch rate so low?

A hatch around **50% is normal for shipped eggs** even with perfect technique — the shaking, drops, and temperature extremes in the mail damage air cells and embryos before the eggs ever reach you. Set extras, handle them gently, and don't assume your incubator is at fault.

Do I need to turn shipped eggs the first week?

Not by rolling them. Keep eggs with damaged air cells **upright in a carton** and gently tilt the whole carton side to side a few times a day by hand. Only move them to their side or an autoturner after about a week, once the air cells have firmed up.

How to Prepare Shipped Hatching Eggs Before Incubating

Verified September 2026

The short version

Rest shipped eggs large-end up in a carton for 8–24 hours at room temperature before setting, so air cells jostled loose in transit can re-settle. If air cells are wobbly or detached ('saddled'), incubate them upright in a carton for the first week and hand-turn gently. Even done right, shipped eggs commonly hatch at only about 50% because of shaking and temperature swings in the mail — so set extras, and candle before setting to assess air-cell damage.

Why shipped eggs need resting first

Hatching eggs travel rough. Vibration, drops, and temperature swings in transit shake the air cell — the pocket of air at the large end — loose from the membrane, and can scramble or 'saddle' it (leave it tipped, wobbly, or bubbled). Setting an egg with a disturbed air cell straight into a turning incubator makes it worse, so the fix is simple: let the egg sit still and warm up first.

Let shipped eggs rest large-end (pointed end down) up for 8–24 hours at room temperature before setting. Mississippi State University Extension advises always positioning hatching eggs small-end down and large-end up because the air cell sits at the large end, so keeping it uppermost during the rest gives a loosened air cell a chance to re-settle. MSU also cautions that eggs should warm slowly before going into the incubator — rushing a cold box straight into a warm cabinet causes condensation ('sweating') on the shell. Keep the eggs out of drafts while they rest.

Setting saddled or detached air cells upright

After resting, candle each egg and look at the air cell. A normal one sits fixed at the large end. A 'saddled' air cell slides down one side or wobbles like a bubble level when you tilt the egg; a detached air cell drifts freely. These eggs can still hatch, but they must be kept oriented correctly.

Incubate wobbly or detached air cells upright — large end up — in an egg carton for at least the first week, rather than laying them on their side or using an automatic turner. Cut the carton bottoms out for airflow if needed. Instead of rolling the eggs, tilt the whole carton gently from side to side by hand a few times a day, so the embryo keeps developing against a stable air cell. Many hatchers keep all shipped eggs upright in cartons for the first 7–10 days and only lay them down (or move to a turner) once the air cells have firmed up.

Expect about a 50% hatch — and set extras

Shipped hatching eggs hatch far below what the same eggs would manage locally. A hatch rate around 50% is normal and expected even when you do everything right — the losses come from transit damage and temperature extremes in the mail, not from your incubator or your skill. A hard-shipped box that hatches only a few chicks is disappointing but not unusual.

Plan for it: set more eggs than the number of chicks you want, and candle throughout to remove clears (never-developed) and quitters (early deaths) so they don't spoil and contaminate healthy eggs. Keep records of the seller and shipping so a repeatedly poor shipper is easy to spot.

Candling to assess transit damage

Candle shipped eggs before you set them and again during incubation. Before setting, you're grading air-cell damage: intact and fixed (set normally), saddled/wobbly (set upright), or badly scrambled and foaming (long odds — set upright and hope, or cull). This up-front look tells you which eggs need the carton treatment.

Candle again around day 7–10 to confirm veining and a moving embryo, and once more before lockdown to pull clears and quitters. Shipped eggs sometimes show slow or uneven early development from the transit stress, so give borderline eggs a couple of extra days before deciding.

Common pitfalls

Setting shipped eggs the moment the box arrives — skip the 8–24 hour rest and loosened air cells never re-settle.
Laying saddled or detached air cells on their side or in an autoturner; they must stay large-end up in a carton for the first week.
Judging yourself by local hatch rates — ~50% is normal for shipped eggs, so don't chase a phantom incubator problem.
Not setting extras, then being short of chicks after the expected transit losses.
Moving a cold box straight into a warm incubator, causing the shells to sweat and take on bacteria.

Frequently asked questions

How do I prepare shipped hatching eggs before incubating?: Unpack them carefully and let them rest large-end up in a carton for 8–24 hours at room temperature so air cells shaken loose in transit can re-settle, and so cold eggs warm up without sweating. Candle each egg to grade air-cell damage: set intact ones normally, but incubate wobbly or detached ('saddled') air cells upright in a carton for the first week, hand-tilting gently instead of using a turner. Expect only about a 50% hatch even when everything is done right — jostling and temperature swings in the mail cause most losses — so set more eggs than you need.
How long should shipped eggs rest before setting?: 8–24 hours, large-end up and pointed-end down, at room temperature. This lets disturbed air cells re-settle and lets cold eggs warm gradually so the shells don't sweat when they go into the incubator.
Should shipped eggs point up or down while resting?: Large end (rounded end) up, pointed end down. The air cell lives at the large end, so keeping it uppermost during the rest helps it re-settle against the shell.
What is a 'saddled' or detached air cell?: It's an air cell knocked loose from the membrane in transit. A saddled air cell slides down one side or wobbles like a bubble level when you tilt the egg; a detached one drifts freely. These eggs can hatch, but they should be incubated upright in a carton for at least the first week so the embryo develops against a stable air cell.
Why is my shipped-egg hatch rate so low?: A hatch around 50% is normal for shipped eggs even with perfect technique — the shaking, drops, and temperature extremes in the mail damage air cells and embryos before the eggs ever reach you. Set extras, handle them gently, and don't assume your incubator is at fault.
Do I need to turn shipped eggs the first week?: Not by rolling them. Keep eggs with damaged air cells upright in a carton and gently tilt the whole carton side to side a few times a day by hand. Only move them to their side or an autoturner after about a week, once the air cells have firmed up.

Sources

Keys to Successful Handling of Hatching Eggs (P3788 — egg positioning & the air cell) — Mississippi State University Extension Service (University extension)
Hatching Quality Chicks (egg storage, warming & handling) — Mississippi State University Extension Service (University extension)
Trouble Shooting Failures with Egg Incubation — Mississippi State University Extension Service (University extension)