Blue Jay Eggs Vs Robin Eggs: What’s The Difference?

Do you find yourself confused differentiating between Blue Jay eggs and Robin eggs? You’re not alone – their strikingly similar colors often create confusion.

This blog will guide you through the intriguing world of these bird species, enabling you to confidently identify their eggs by size, shape, and subtle color variations.

Ready for an fascinating exploration into birdwatching? Dive in!

Key Takeaways

  • Blue Jay eggs are slightly larger than American Robin eggs and have brown speckles, while Robin eggs are plain blue.
  • Blue Jays build their nests with sticks, twigs, and mud in trees, while Robins make nests from grass, hay, and mud in lower shrubs or trees.
  • Blue Jays lay 2 to 7 eggs at a time.and incubate them for about 17 days before hatching. American Robins usually have smaller families with 3 or 4 eggs per nest.that hatch after about 10 to 14 days.
  1. Blue Jay eggs are bigger with brown speckles on them compared to the plain blue color of Robin eggs.
  2. Blue Jays build nests using sticks and twigs in trees while Robins use grass and hay in lower shrubs or trees.
  3. Blue Jays lay more eggs (2-7) at a time than American Robins (3-4), which also take less time to hatch (10-14 days).


American Robin Eggs: An Overview

American Robin eggs are a beautiful shade of blue and can be easily recognized by their distinct color.

Description and Appearance

Robin eggs are bright blue. They have a smooth shell with no marks. Blue Jay eggs are different. They have brown spots all over them. The size of Blue Jay eggs is a bit bigger than Robin eggs.

Also, Blue Jays wear blue feathers and show big crests on their heads.

Behavior and Nesting Habits

Robins pick low shrubs or trees to build nests. They use grass, hay, and mud for the nest. It looks like an open cup. Blue Jays make their nests in trees too. But they use sticks and twigs along with mud.

The robin’s nest will be around 5 to 15 feet high from the ground. Robins are more at home near people than Blue Jays are.

Clutch Size and Incubation Time

Blue Jays lay 2 to 7 eggs at a time. They keep the eggs warm for about 17 or 18 days before they hatch. American Robins do things a bit differently. They usually have smaller families, with 3 or 4 eggs in each nest.

Their babies come out sooner too, hatching after just 10 to14 days of warmth and care!

Blue Jay Eggs: An Overview

Blue Jay eggs are a beautiful shade of blue, similar to American Robin eggs. However, there is one distinct difference between the two. Blue Jay eggs have small brown speckles on their surface, while American Robin eggs do not.

These speckles help camouflage the eggs within their environment and provide some protection from predators. In terms of size, Blue Jay eggs are slightly larger than American Robin eggs.

Blue Jays are native to North America and can be found year-round across the lower 48 states east of the Rocky Mountains. They are known for their striking blue feathers and loud calls that can often be heard in suburban areas.

Blue Jays also display territorial behavior during nesting season and will fiercely defend their nests against intruders.

When it comes to nesting habits, Blue Jays typically build their nests using twigs, grasses, and other materials they find within their habitat. They generally lay anywhere from 2 to 7 eggs in a clutch and incubation lasts around 17 days before the chicks hatch.

Once hatched, both male and female Blue Jays share parental responsibilities in caring for the young until they fledge from the nest after about 17 to 21 days.

Overall, Blue Jay eggs are a fascinating part of these birds’ reproductive cycle. Their unique coloration and size set them apart from other bird species like robins while still sharing similarities in terms of nesting behavior.

Observing these delicate yet resilient structures can provide valuable insights into the lives of these captivating creatures found in our very own backyards.

Comparing Blue Jay Eggs and Robin Eggs

Blue Jay eggs and Robin eggs differ in size, color, and nesting behavior. Curious to learn more about these fascinating differences? Keep reading!


Blue Jay eggs are slightly larger than American Robin eggs. Blue Jay eggs measure about 1-1/8 inch by 3/4 inch, while Robin eggs are slightly smaller. This size difference is noticeable when comparing the two side by side.

The larger size of Blue Jay eggs may be due to the fact that Blue Jays themselves are larger birds than Robins.


Blue Jay eggs and American Robin eggs are both blue in color. However, there is a slight difference in the appearance of their eggs. Blue Jay eggs have brown speckles, while American Robin eggs do not.

The blue color of these eggs is due to a pigment called biliverdin, which is found in the eggshell. This pigment gives the eggs their characteristic blue hue. So if you come across a nest with blue eggs, it could be either from a Blue Jay or an American Robin!

Nesting Behavior

Blue Jays and American Robins have different nesting behaviors. Blue Jays build their nests with sticks, twigs, and mud, usually placed in trees. They may also use abandoned nests from other bird species.

On the other hand, American Robins make their nests from grass, hay, and mud in an open cup shape. These nests are typically found in lower shrubs or trees, around 5 to 15 feet above the ground.

Both birds lay multiple eggs at a time – Blue Jays lay 2 to 7 eggs while American Robins lay 3 or 4 eggs per clutch.

What to Do When You Find a Nest with Eggs

If you find a nest with eggs, it’s important to know what to do. Here are some steps you can take:


  1. Leave the nest alone: It’s best not to disturb the nest or touch the eggs. Many bird species abandon their nests if they sense any human interference.
  2. Observe from a distance: You can watch the nest from afar using binoculars or a camera with a zoom lens. This way, you can still enjoy observing the birds without causing any harm.
  3. Do not remove the eggs: Removing eggs from a nest is illegal in many places and can greatly harm the bird population. It’s best to let nature take its course and allow the birds to incubate and hatch their eggs.
  4. Protect from predators: If you notice any predators near the nest, such as squirrels or cats, try to deter them without disturbing the nest. You can use noise or motion devices to keep predators away.
  5. Document your observations: Take note of when you first noticed the nest, how many eggs are present, and any changes you observe over time. This information can be valuable for future research or reporting.



– What color are blue jay eggs?

– How many eggs does a robin lay?

– How can you tell if an egg is alive?

What color are blue jay eggs?

How many eggs does a robin lay?

Female American Robins typically lay around 3 or 4 eggs at a time. These eggs are usually light blue in color and have speckles on them. The robin parents take turns incubating the eggs, which means they sit on top of them to keep them warm, until they hatch after about two weeks.

How can you tell if an egg is alive?

You can tell if an egg is alive by gently moving it and listening for any sounds or movement inside. A live egg may make chirping noises, wiggle slightly, or even crack slightly as the baby bird inside starts to hatch.

Another way to check is by shining a bright light through the shell. If you see veins or an embryo forming inside, then the egg is likely alive. It’s important to be careful when handling eggs and only do so if necessary, as excessive handling can harm or disturb the developing bird inside.


In conclusion, Blue Jay eggs and Robin eggs may both be blue, but they have some differences. Blue Jay eggs are bigger and have brown speckles, while Robin eggs are plain blueBlue Jays are more territorial than Robins, which affects their nesting behavior.

So next time you come across a bird’s nest with eggs, take a moment to appreciate the unique characteristics of each species.


1. How can I tell the difference between Blue Jay eggs and Robin eggs?

Blue Jay eggs are pale blue or green with speckles, while Robin eggs are a light blue color with no markings.

2. Are Blue Jay and Robin eggs the same size?

No, Blue Jay eggs are slightly smaller than Robin eggs in size.

3. Where do Blue Jays and Robins usually lay their eggs?

Blue Jays typically nest in trees, while Robins build their nests on ledges or in bushes.

4. Can I touch or move Blue Jay or Robin eggs if I find them?

It is best to avoid touching or moving any bird’s egg as it may cause harm to the egg or disrupt the nesting process. It’s important to let nature take its course and observe from a distance.

Julian Goldie - Owner of

Julian Goldie

I'm a bird enthusiast and creator of Chipper Birds, a blog sharing my experience caring for birds. I've traveled the world bird watching and I'm committed to helping others with bird care. Contact me at [email protected] for assistance.