American Robin Nests and Eggs (2024)

American Robin (Turdus migratorius)

Nest building

American Robins pair-bond during the breeding season. Females are primarily responible for building the nest that is made of twigs, mud and lined with dry grass.Sometimes the nest will have string or ribbon that the robins find in nearby (view nest photo). The robin nest may also have lichens and moss collected from trees.

Nest location and size

The bowl-shaped nests are built in a bush, tree or under theeaves of buildings - 5 to 25 feet off the ground. The nest is 6 inches across and 4 to 6 inches high. The rounded inside area of the nest is about 3.5 to 4 inches in diameter, which is large enough to hold a baseball (see photo below).

To be successful, the robin nest must last for more that a month, safely hold 4 growing birds and provide insulation from the heat and cold. Think of the nest as a baby incubator with the female robin providing the heat required for the young to develop inside the egg. The female continues to sit on the nest for 10-12 days after all the nestlings hatch. She keeps the nestlings warm, safe and dry.

Reusing nests

Sometimes the nests are reused. One nest was built on top of a old robin's nest that was constructed three years ago. So, if you find an old bird nest it's a good idea to leave it alone.

One creative robin used parts of an old nest for building a sturdy nest under the eave of a house. The female sampled a few locations before deciding to build her nest in a hidden location that was well protected from wind and rain. Nest location is critical in a rainy area like Seattle. The nest included lichens collected from a maple tree and small twigs from a hemlock tree located near the house.

The nest building process took about two days to complete.

Robin eggs

The female typically lays two to four light blue eggs - about the size and weight of a quarter (see photo). Thefemale incubates the eggs over a two-week period and both parents carefor the young. The eggs take around two weeks to hatch and the chickswill fledge when they are about 12 to 14 days old. The female may producetwo broods of young each year. The young are born with their eyes shut and firstopen their eyes around five days after hatching.


Protecting the nest

Both parents aggressively defend the nest area. They emit a series of alarm calls that distract predators. When the nestlings hear the alarm call, they duck down low in the nest and remain silent so they to go undetected by predators (including crows). When the female is sitting on the nest she is silent and moves slowly since she doesn't want predators to find the nest. During feeding, the young make chirping sounds but these calls can only be heard a short distance away.

Watch Out!

Male robins are well known for dive-bombing people and predators within ten feet of a nest. The birds will swoop down close to your head to and call loudly to draw your attention away from the nest site.

Keeping the nest clean

The nestlings poop after every feeding - that's a lot of waste!

But the nest is very clean, so where does all the waste go?

Nestlings produce a "fecal sac" - a white bundle of poop - after each feeding.

After the nestling eats a worm, they lift up their rear and excrete the white sac which is collected in the beak of the adult bird.

Fecal sacs are like disposable diapers for birds!

Sometimes the parent carries the fecal sac away in their beak and drops it far from the nest. Other times the adult swallows the fecal sac at the nest site - yuk. Apparently, the parents may eat the sacs for extra nutrition.

The sac is removed from the nest by the parents to keep the nest clean. This behavior helps to reduce exposure to pathogens and parasites, or odors that can lead to predation.


American Robin Nests and Eggs (5) American Robin Nests and Eggs (6) American Robin Nests and Eggs (7)

Photos of American Robin male, female and juvenile.

Source: This information is based on direct observations by Tim Knight of four nest sites in Seattle, Washington. Robin behavior and nesting activity can vary with location.

More information:

Removing Fecal Sacs

Photos © Tim and Henry Knight


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American Robin Nests and Eggs (2024)

FAQs

Should I remove a robin's nest after babies leave? ›

While robins might repair or build on top of a previous nest, most of them build a new nest. This is best for many reasons. A used nest is a mess, stretched out and often home to insects or parasites and possibly poop. Take the nest down and the nest site will be ready for the next robin family.

How long after a robin builds a nest does it lay eggs? ›

Day 1 Female robin begins building her cup shaped nest out of twigs and grass with a mud base. Day 8 Female lays first egg. Day 9 Lays second egg. Day 10 Lays third egg. Female may begin incubating.

What to do if you find a robin egg and no nest? ›

The best thing to do with an egg that you find is to simply leave it be. I know you're concerned about the little baby growing in it, but there is a strong chance that there may not even be a baby in there. This may be an egg that wasn't fertilized, or didn't develop properly.

Can you move a robin's nest without eggs? ›

It is actually illegal to remove or relocate an active bird's nest in many states, even in your own backyard!" In the United States, for example, it is illegal to tamper with any active nest from a native bird species, but if the nest has been abandoned or no eggs have yet been laid, it can be removed as needed.

Will a mother bird come back if you touch her nest? ›

In most cases, the parents are nearby and may be waiting for you to leave the area. Touching animals can also result in diseases passing from wildlife to humans, or vice versa. However, if you do inadvertently happen to touch a bird's egg or nest, rest assured that your scent alone won't cause the parents to flee.

Do robins mourn the loss of a baby? ›

So birds certainly possess the capacity to mourn—they have the same brain areas, hormones, and neurotransmitters as we do, “so they too can feel what we feel,” Marzluff says—but that doesn't mean we know when it's happening.

Will a robin abandon her nest of eggs? ›

If you move a robin's nest the parents will most likely abandon the nest, eggs and/or young. Here's why: Nest-site fidelity grows during the nesting season. The more time and energy the birds invest in the nest, the less likely they are to abandon it when disturbed.

How long after Robin eggs hatch do they fly away? ›

Robin eggs

The female typically lays two to four light blue eggs - about the size and weight of a quarter (see photo). The female incubates the eggs over a two-week period and both parents care for the young. The eggs take around two weeks to hatch and the chicks will fledge when they are about 12 to 14 days old.

Do birds mourn the loss of their eggs? ›

Oh they definitely do mourn the loss of eggs and chicks. Just the other day I had to hold three group sessions to council groups of birds in my neighborhood that could not stop mourning the loss of eggs due to a local ground squirrel that has been stealing eggs from them.

What percentage of robin eggs survive? ›

An American Robin can produce three successful broods in one year. On average, though, only 40 percent of nests successfully produce young. Only 25 percent of those fledged young survive to November.

What would take robin eggs out of a nest? ›

The main predators of robin eggs are blue jays, crows, snakes, squirrels. Deer eat a lot of bird eggs and nestlings, too, but only from ground nests. Snakes swallow eggs on the spot, and since you found one egg in the yard, a snake most certainly wasn't the culprit.

Do robins recognize humans? ›

The simple answer to this question is YES! Robins can recognise humans. For the most part, robins recognise a human's traits, such as the way they move, walk and even facial features.

What happens if you disturb a bird's nest with eggs? ›

So, in most cases, the nest is fine and the adult birds will be back to incubate the eggs soon. You can keep an eye on the nest to make sure the parents return, just make sure you keep your distance from the nest as you don't want to scare the parents away. We don't advise that you try to hatch the eggs yourself.

What month do robins lay eggs? ›

Robins are one of the earliest birds to nest and can begin building as early as January if the weather is mild, although the breeding season usually begins in March. They start laying their eggs between mid-April and mid-August, with baby chicks fledging after around two weeks.

What to do with an abandoned robin's nest? ›

If she does not return after 2-4 days, go ahead and remove the nest. Any other robins that come will build their own nest.

Should I get rid of robin's nest? ›

By getting rid of old nests, you eliminate potential breeding sites and discourage robins from returning to the same spot year after year. However, it's essential to wait until the nests are empty and the robins have migrated before removing them to avoid legal issues and harm to the birds.

What to do with bird nest after babies leave? ›

At the end of the season, you can remove the nesting material and scrub the inside with a mild detergent and water. If your nest is soiled with fecal matter, we recommend removing the nest and cleaning the nest box out with a solution of 1 part bleach to 10 parts water.

Should I remove abandoned bird nest? ›

You can definitely clean out a nest box after the fledglings leave. NestWatch suggests cleaning out nest boxes or birdhouses at the end of the breeding season.

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