which bird has the smallest egg

Hummingbirds may loom large in our minds thanks to their fast and flashy nature, but in truth these birds live life on a small scale — starting with their eggs. Weighing in at less than one-fiftieth of an ounce, hummingbird eggs are easy to overlook, but these tiny wonders deserve our attention.

To learn more, take a look below at our answers to some of the most frequently asked questions about hummingbird eggs and the reproductive cycles of these extraordinary birds.

Dont forget to make it to the bottom where youll find important tips about how you can help protect hummingbirds.

Role In Bird-Plant co-evolution

Bee hummingbirds are important players in bird-plant coevolution. They rely only on flowers for nectar, and in doing so, they help plants reproduce by spreading pollen grains from one bloom to another. The pointed, thin bill is designed to reach deep inside flowers to find sweet nectar. One bird is thought to be able to visit over 1500 flowers in a single day, which aids in the widespread reproduction of plants.

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Despite their dazzling and swift lifestyle, hummingbirds actually lead small lives, beginning with the development of their eggs. Hummingbird eggs are small and easily overlooked, weighing less than a fifth of an ounce, but they are amazing little creatures that deserve our attention.

See our responses to some of the most commonly asked questions about hummingbird eggs and the reproductive cycles of these amazing birds below to learn more.

Remember to scroll down to the bottom for crucial information on how you can contribute to the protection of hummingbirds.

which bird has the smallest egg

Tiny. Hummingbird eggs are commonly likened to tiny jelly beans in terms of size. Nonetheless, the Western Hemisphere is home to over 350 distinct species of hummingbirds, the only region in the world where they can be found, and the size of their eggs varies somewhat.

The smallest of hummingbirds, the Bee Hummingbird, found only in Cuba, lays eggs the size of coffee beans. The largest hummingbird, the nine-inch-long Giant Hummingbird, which lives in the Andes and weighs more than a Barn Swallow, lays eggs the length of a penny.

It should come as no surprise that these eggs weigh little given their size. Ruby-throated Hummingbird eggs weigh half a gram, or roughly one-fifth of the weight of a penny.

which bird has the smallest egg

Depending on the species, most hummingbirds lay eggs one to three times a year.

For instance, the Pacific Coast states are home to Annas Hummingbirds, who typically produce two or three broods a year. This also applies to certain non-migratory hummingbirds that breed multiple times a year in the tropics.

Every year, Ruby-throated Hummingbirds migrate, and usually only have one brood. But this isnt always the case. In the event that a nest is destroyed prior to the breeding season, female ruby-throats may construct a new one and deposit more eggs.

which bird has the smallest egg

Hummingbirds typically lay two eggs, but they can lay up to three in small clutches.

When compared to other birds’ eggs, theirs may seem tiny, but when you consider how little adult hummingbirds are, their eggs are actually rather large, proportionately speaking.

An American Robin egg, for example, weighs 3. 6 percent as much as the adult that laid it. On the other hand, the weight of an egg laid by a Ruby-throated Hummingbird is almost 17% of that of a mature bird.

which bird has the smallest egg

Hummingbirds lay eggs at different times of the year depending on where they are.

The only hummingbird in eastern United States that breeds is the ruby-throated hummingbird. S. , typically lays eggs between March and May. Among the many variables that determine the precise date is latitude. If this seems unexpected, keep in mind that the majority of Ruby-throated Hummingbirds migrate, spending the winter in Mexico and Central America, and that northern locations are colder and require longer travel times.

In the West, breeding and egg-laying dates vary. The Costas Hummingbird, a species common in the Southwest, lays its eggs from February through June. Breeding in the Pacific Northwest, Alaska, and Canada, rufous hummingbirds typically lay their eggs later in the year, typically in April or July.

which bird has the smallest egg

Like many other bird species, but not all of them, hummingbirds use nests to lay their eggs. These tiny, well-hidden structures are the smallest bird nests in the world, measuring only a few inches in diameter and covered in lichen and spiderweb thread.

Check out our other post, “Hummingbird Nests 101: A Beginners Guide,” for more information about hummingbird nests. It answers a number of frequently asked questions about nests using pictures and videos.

which bird has the smallest egg

Incubation is needed to maintain egg temperature and promote healthy embryonic development before hummingbird chicks hatch. This process can take anywhere between two and three weeks, depending on the species.

Due to the fact that males are not involved in the incubation process, females must perform the difficult task of maintaining their eggs in addition to feeding themselves.

Female Black-chinned Hummingbirds in California balance these needs by embarking on brief but frequent food-gathering trips, usually six to nine times per hour, while nesting.

Females can leave their nests for longer periods of time because incubation is easier in the tropics, where lower temperatures are less of an issue.

which bird has the smallest egg

Hummingbird eggs are usually dull white.

Because other bird eggs have such a wide variety of colors and patterns, the fact that these eggs are pigment-free may provide some insight into how sunlight affects hummingbird embryos.

According to researchers, the color of eggs is the result of a careful balancing act: lighter colors keep eggs cooler while potentially exposing them to more UV dangers, while darker colors shield embryos from damaging UV rays but also heat up more quickly. If so, the white hue of modern hummingbird eggs could have resulted from evolutionary pressure to keep them cool.

which bird has the smallest egg

If you happen to catch a glimpse of hummingbird eggs, count yourself lucky because it doesn’t happen often. But dont touch!.

It is against the law in the U. S. to touch, relocate, or remove active nests.

In addition to posing legal challenges, human visitors can cause stress to female hummingbirds, who already have a lot on their plates. To exacerbate the situation, your presence may notify other predators—like jays—where the nest is located.

Due to these factors, it is advisable to avoid hummingbird nests and instead use binoculars to observe from a distance.

which bird has the smallest egg

Although migratory hummingbirds frequently return to their preferred nesting sites each year, they don’t always construct their nests there.

Females must build new nests every year, usually in different trees or bushes but in the same general area, since their nests are only meant to be used once.

It is no small accomplishment for hummingbirds to faithfully repeat these lengthy flights, especially in light of the fact that their brains are as small as rice grains.

How do they do that? Researchers think that a variety of factors are probably at work. These include, among other things, the magnetic field of Earth, the position of the sun, the use of topographic cues, and maybe even smell.

Hatchlings emerge from their shells with their eyes closed and almost completely devoid of feathers. These chicks are totally reliant on their mother for warmth and sustenance because they are unable to stand. Hummingbird chicks rapidly grow in the ensuing weeks as they get ready for their first flight.

See our post “From Tiny Egg to Fledgling: Amazing Facts About How Hummingbirds Grow” for more information about hummingbird chicks. It gives you a great overview of these tiny, seldom seen chicks’ fascinating lives.

which bird has the smallest egg

Hummingbird eggs and chicks are susceptible to predators, as was previously mentioned. Hummingbirds face a variety of threats from humans once they have flown and are no longer in the nest. These include, among other things, unrestrained outdoor cats, hazardous pesticides, window collisions (birds cannot see glass), and habitat destruction.

We all can do our part to protect hummingbirds.

With our joint venture partners, American Bird Conservancy, we have enhanced conservation management on six 4 million acres of U. S. over the past ten years, bird habitat—an area bigger than the state of Maryland—has This is a huge project that needs everyone’s support. You can contribute by giving today.

Legislation passed by Congress and federal organizations, including the U S. The US Fish and Wildlife Service significantly affects the country’s birdlife. By requesting that lawmakers give priority to protecting birds, their habitat, and bird-friendly policies, you can influence these regulations for the better. To get started, visit ABCs Action Center.

Finally, dont overlook the impact you can have at home. There are eight easy steps you can take to help hummingbirds in your garden, like using less pesticide and adding native flowering plants.

ABC protects hummingbirds throughout their entire life-cycle.

In the U. S. ABC assisted in the establishment of the Paton Center for Hummingbirds in Arizona, a facility dedicated to educating the local population about these amazing birds. We collaborate with local communities and partners in Latin America to guarantee habitat for the rarest species, such as the Marvelous Spatuletail and the Blue-throated Hillstar. Together with our partners, we support a reserve network that crosses Latin America, encompassing over a million acres and contributing to the conservation of 234 species of hummingbirds!

Additionally, ABC goes on field trips with our partners to look for new hummingbird populations and keep an eye on those that are already known. Through these efforts, we are able to identify new threats and changes in land use that may have an impact on species and their habitats, as well as changes in population.

More From Bird Calls Blog

which bird has the smallest egg


What bird lays smallest eggs?

Hummingbirds have the smallest eggs among U.S. species.

How small can a bird egg be?

Bird species
Egg size
Egg color
House Finch
L: 0.6-0.8 in. W: 0.5-0.6 in.
House Sparrow
L: 0.8-0.9 in. W: 0.6 in.
L: 1.4 in. W: 1.0 in.
White/pale blue
Mourning Dove
L: 1.0-1.2 in. W: 0.8-0.9 in.