Barn Owl Life Cycle: Nest Building To Fledging (and everything in between)

Barn owls are medium-sized birds of prey with a distinctive heart-shaped facial disc and white underparts. Their wings and backs are golden-brown with specks of grey and white, giving them a striking appearance in flight. 

These owls are commonly found across the UK, favouring open countryside and farmland for hunting. They tend to nest in barns, hollow trees, or old buildings, taking advantage of quiet, sheltered spaces. 

Read on to learn the fascinating connection between the Barn owl’s habitat preferences and their breeding success rates.

How Long Does A Barn Owl Live?

Barn owls are known to live for about 4 years in the wild, but in captivity, they can sometimes survive up to 20 to 25 years. Key factors that impact their lifespan include food availability, habitat conditions, and the risk of falling prey to predators.

How Fast Can A Barn Owl Fly?

Flying at speeds between 30 and 40 miles per hour (48 to 64 km/h), the Barn Owl might not be the fastest in the sky, but their efficiency as hunters is undeniable. Their silent, precise flight allows them to catch prey with ease.

Are Barn Owls Aggressive?

Though Barn owls aren’t typically aggressive, they can show defensive behaviour if they sense a threat, especially when guarding their nests or chicks. In these moments, they might hiss, clap their beaks, or even go after perceived intruders. Despite being territorial and protective of their young, barn owls rarely show aggression towards humans unless they’re provoked, particularly when near their nesting sites.

What Is A Barn Owl’s Habitat?

You’ll often find Barn owls thriving in open spaces with short vegetation, as this provides ideal conditions for hunting. They are commonly seen in grasslands, farmlands, and at the edges of woodlands, while they usually avoid urban zones and dense forest. Additionally, barn owls are known to nest in barns and older buildings, which is another sign of their adaptability to man-made structures.

How Long Does It Take For A Barn Owl To Build A Nest?

Unlike many other birds, Barn owls do not construct traditional nests. They prefer to lay their eggs in locations such as caves, cliff ledges, tree hollows, or even man-made structures like barns. These sites are often already covered with owl pellets and debris from past inhabitants. This distinctive approach to nesting means they don’t dedicate much time to building a nest, in contrast to other birds.

Eggs

Let’s look at when Barn owls lay eggs, how many they typically lay, what they look like, and the time they take to hatch.

When Do Barn Owls Lay Eggs?

Barn owls are known to lay their eggs primarily in the spring, with the breeding season usually running from March to August. The exact timing may vary depending on the region and environmental conditions, such as food supply and climate. In the UK, for instance, the average date for laying the first egg has progressively shifted earlier over the years, likely due to climate change, with April now being a common start date.

How Many Eggs Does A Barn Owl Lay?

Egg numbers for Barn owls typically vary between 4 and 6, but under certain conditions, it can range from 2 to as many as 18. Factors like location and food supply play a major role in determining how many eggs are laid. When food is abundant, they often raise more than one brood in a year. The male continues feeding the fledged young while the female incubates a new clutch of eggs.

What Do Barn Owl Eggs Look Like?

Small and white, Barn owl eggs are often described as having a dull finish, sometimes appearing darker because of the nest’s dirt. They measure approximately 1.5 to 1.7 inches long and 1.2 to 1.3 inches wide. 

Studies suggest that barn owl eggs are about 30 percent smaller relative to the female’s body weight compared to other owls. This may enable the female to lay more eggs using the same body reserves. These traits make barn owl eggs stand out when it comes to both appearance and nesting habits.

How Long Do Barn Owl Eggs Take To Hatch?

The incubation period for Barn owl eggs generally lasts 29 to 34 days. As soon as the first egg is laid, incubation begins, and then new eggs are laid every 2-3 days over an 8-21 day span. This results in the eggs hatching at different times, which causes the chicks to be different ages in the nest. This difference in age can affect their growth and chances of survival.

Chicks

Let’s find out how many chicks Barn owls usually raise, when they open their eyes, and when they begin flying.

How Many Chicks Does A Barn Owl Have?

Usually, Barn owl nests contain 4 to 6 chicks, though several factors such as food availability, the female’s age, and nesting conditions can cause the numbers to vary. Most nests see around 4 chicks hatch successfully, but depending on the conditions each season​, it can range from 1 to 11.

When Do Barn Owl Chicks Open Their Eyes?

Newly hatched Barn owl chicks are blind and usually take around two weeks to open their eyes, though some may do so earlier.  At this early stage, they remain dependent on their parents for both food and warmth as they develop.

When Do Barn Owl Chicks Fledge?

Around 50 to 55 days after hatching, Barn owl chicks make their first attempt at flight. Despite fledging, they often return to the nest for roosting in the following weeks. Both parents remain actively involved in feeding them until the chicks are able to fend for themselves, which generally happens 3 to 5 weeks after fledging.

SEE ALSO: Barn Owl Diet and Size: Feeding Habits, Predators, and Measurements

Frequently Asked Questions