
Chicks are typically shipped when they are between one and three days old. This is because they have absorbed the last of the yolk before hatching, which sustains them for up to three days. Shipping chicks older than one day is considered unsafe, as they do not have the necessary stores to survive the journey. Newly hatched chicks struggle to maintain their body temperature and are vulnerable to hypothermia, especially when exposed to low temperatures during transportation. Chicks are shipped without food and water, relying solely on their egg yolk sacs, which can lead to significant weight loss during the journey.
| Characteristics | Values |
|---|---|
| Age of chicks when shipped | 1-3 days old |
| Age of chicks when they arrive | 2-72 hours old |
| Age of chicks when they are considered juveniles | 6 weeks old |
| Shipping days | Monday to Wednesday |
| Shipping method | USPS Priority Mail |
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What You'll Learn

Chicks are shipped when they are one to three days old
Chicks are shipped very soon after hatching, typically within one to three days. This is because they have recently absorbed the yolk, which can sustain them for up to three days. This is nature's way of ensuring that early hatchers can survive without food or drink until the mother finishes hatching the rest of the eggs.
Shipping chicks that are older than one day is considered unsafe, as they would not have the necessary nourishment to survive the journey. Chicks are also unable to maintain their body temperature when exposed to low temperatures, and they can become hypothermic within 15 minutes of being exposed to an ambient temperature of 66°F (19°C).
To ensure the chicks' safety during shipping, companies use boxes designed to keep them warm and safe. They also include items such as custom amounts of nesting material, ventilation, and heat packs for smaller orders. Additionally, gel is added to the box to provide nourishment until the chicks arrive at their destination.
It is important to note that the chronological age of shipped chicks may not always match their biological age. Chicks in the same batch can have biological ages that differ by up to two days, even if their chronological ages are the same. This means that some chicks in a batch of "three-day-old" chicks could actually be five days old biologically.
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They can survive without food during this time as they absorb yolk before hatching
Chicks are shipped when they are just one day old. They are shipped so soon after hatching because they have just absorbed the last of the yolk, which will sustain them for up to three days. This is why nature works this way: if chicks were hatching beneath a mother hen, the early hatchers would be able to survive without eating and drinking until the mother finished hatching the rest of the eggs. The mother cannot get up from the nest until the entire hatching is over, or the last babies will die in their shells, unable to hatch without their mother's warmth.
Chicks can survive without food during shipping because they absorb the yolk before hatching. The yolk is a source of vital nutrients and protective antibodies for the chick. If chicks are unable to fully absorb the yolk sac before hatching, they will have an attached mass on the outside of their bodies, which is the unabsorbed yolk sac. This unabsorbed yolk sac puts the chicks at a disadvantage as they will not be as strong and will have a weakened immune system. In addition, unabsorbed yolk sacs are essentially an open lesion, which makes the chick more susceptible to bacterial infection.
Yolk sac infection, or omphalitis, is a common cause of death in newly hatched chicks. It is most commonly caused by infection with Escherichia coli bacteria, but other bacteria can also be the culprit. Chicks can become infected during incubation, while hatching, or when in the brooder. To avoid this, it is important to handle chicks under optimal climatic conditions from the moment of pulling them from the incubator until their placement in the brooder to avoid chilling or overheating, as either will be detrimental to the chicks' immune status and yolk sac resorption. Delay feeding and watering newly hatched chicks to allow them to better absorb their yolk sac.
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Chicks are shipped by USPS Priority Mail
The US Postal Service has been working with hatcheries for over 100 years to safely transport mail-order chicks during the spring and summer months. Chicks are shipped by USPS Priority Mail the same day that they hatch, and they will be less than 72 hours old when they arrive at your local post office.
Chicks are shipped on Mondays, Tuesdays, and Wednesdays only, and they can arrive any day of the week between Tuesday and Thursday, depending on your location and how the Post Office services your area. It usually takes 1-2 business days to get to your Post Office, but some orders may take 3 days to reach rural areas.
When chicks are about to hatch, they absorb the last of the yolk, which sustains them for up to three days, making it possible to ship them at this time. After this, they do not have the nourishment needed to survive the journey. Chicks are shipped in cardboard boxes, and the hatcheries take care to ensure that the chicks are kept safe and warm during transit.
Tracking information is provided by the USPS, although it may not always be accurate or up-to-date. It is recommended that you are available at any time of the day during the expected week of their arrival, as baby chickens are perishable. You will need to work out the details with your local post office if you want the chicks to be delivered to your home.
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They are shipped in batches with the same chronological age
Chicks are shipped as soon as they hatch, which means they are only a few hours old when they are sent out. They are shipped in batches, and while they are all the same chronological age, they can be up to two days apart in biological age. This is because chicks incubated together don't all hatch at the same time. They can hatch as early as 19 days or as late as 21 days, which is a 49-hour spread.
Chicks are shipped with their yolk, which provides enough nourishment for up to three days. This is why they need to be shipped right after they hatch—if they are older, they won't have the necessary stores to survive the journey. Chicks also have a hard time maintaining their body temperature when exposed to low temperatures, especially when deprived of food, so shipping them early is unsafe.
To ensure the chicks arrive in optimum condition, poultry breeds and sexes are mixed. Companies take various measures to keep chicks safe and warm during shipping, such as adding Gro Gel to the box. Chicks are shipped by USPS Priority Mail, and it can take 1-3 business days for them to arrive at the post office after leaving the facility.
It is common practice to order chicks 2-6 weeks before the desired delivery date. Companies usually have two or three batches of juvenile birds available each year, and they fill orders on a first-come, first-served basis.
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Chicks are perishable and can die during shipping
Chicks are shipped when they are just one day old. At this time, they have absorbed the last of the yolk, which can sustain them for up to three days. After this, they need to be fed, or they will starve. Shipping chicks older than one day is unsafe because they do not have the stores needed to survive the journey.
However, shipping chicks is risky, and many things can go wrong. Chicks are perishable and can die during shipping. They are vulnerable to starvation and dehydration, especially if there are mail delays. During the pandemic in 2020, mail delays resulted in mass deaths for countless mail-order chicks, with 4,800 chicks dying in the state of Maine alone. Exposure to harsh weather conditions can also be dangerous, and many chicks have died after being left outdoors in rain, wind, or snow. In addition, chicks are at risk of suffocation if too many are packed into a small space, and they can also succumb to heat stress in high temperatures.
Even in optimal conditions, chicks lose a significant amount of weight within the first 48 hours if they are not fed. They are also susceptible to travel stress, which can lead to higher mortality rates. Shipping cartons may not be sturdy enough or properly ventilated, and bantam chicks may be crushed by larger chicks if they are shipped together.
While most hatcheries try to avoid shipping weak or sick chicks, it is inevitable that some losses will occur. Shipping is stressful for chicks, and even with the best precautions, deaths can happen during transport or while chicks are in the care of the post office.
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Frequently asked questions
Chicks are usually shipped within 24 to 72 hours of hatching.
Chicks are shipped soon after hatching because they are still consuming nutrients from their yolk and do not need food. This makes it easier for them to survive the journey.
After three days, chicks no longer have the stores needed to survive the journey, and they can become hypothermic.
Chicks are shipped by USPS Priority Mail and are packaged in boxes designed to keep them safe and warm. Gro Gel is also added to the box to keep them nourished.
You should receive a "Chicks Have Shipped" email, and it should take 1-2 business days for your chicks to arrive at your local post office. If they do not arrive within this timeframe, they may have been exposed to low temperatures, which can be dangerous for newly-hatched chicks.





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