If you’ve found a bird egg on the ground or spotted a nest that looks abandoned, the best thing to do in most cases is leave it alone. The parent birds are almost certainly nearby, and the egg has the highest chance of survival right where it is. There are a few situations where action makes sense, but the first step is always to pause and observe before doing anything.
Why the Nest Probably Isn’t Abandoned
A nest with eggs and no adult in sight looks alarming, but it’s usually normal. Parent birds regularly leave the nest to feed, sometimes for extended periods. Many species don’t even begin sitting on their eggs until the entire clutch is laid, which can take several days. This delay is intentional: it ensures all the eggs hatch around the same time.
If you startled a bird off a nest, it will almost always come back once the threat passes. The real risk isn’t your presence near the egg. It’s lingering too long and keeping the parent away. Back up to a safe distance (at least 50 feet if possible) and watch for 30 to 60 minutes. In most cases, you’ll see the adult return.
Touching an Egg Won’t Make Parents Abandon It
The old warning that a mother bird will reject an egg you’ve touched is a myth. Most birds have a very limited sense of smell and cannot detect human scent on their eggs or nest. A few species like turkey vultures have a stronger sense of smell, but even they don’t abandon nests over human contact. The Alaska Department of Fish and Game notes this belief likely started as a well-meaning way to discourage people from disturbing wildlife.
What does cause abandonment is prolonged disturbance. Birds that get flushed off a nest repeatedly by humans, pets, or predators sometimes do give up on a clutch. So the concern should be about how much time you spend near the nest, not whether your fingers brushed an egg.
If You Find an Egg on the Ground
A single egg sitting on the ground with no nest in sight is a trickier situation. If you can see a nest nearby (check trees, shrubs, gutters, and ledges within about 15 feet), you can gently place the egg back. Your scent will not cause rejection. Handle the egg carefully since the shell can be surprisingly fragile, and avoid rotating it more than necessary.
If there’s no visible nest, the egg may have been pushed out by a parent bird deliberately. Some species eject eggs that are infertile, damaged, or laid by brood parasites like cowbirds. In that case, returning it to a nest you can’t find won’t help, and attempting to hatch it yourself is unlikely to succeed.
Why Hatching Eggs at Home Rarely Works
Incubating a wild bird egg requires far more than warmth. Successful hatching depends on precise temperature control, consistent humidity, and regular turning on a specific schedule. Research on passerine (songbird) eggs found that even a small temperature deviation can be catastrophic: eggs incubated at 35°C (about 95°F) instead of the correct range had a 0% hatch rate. At the right temperature in a lab incubator, hatch rates reached about 89 to 90%, but even those chicks had lower survival rates than naturally incubated birds.
Incubation periods vary by species. Finch eggs take roughly 14 days, pigeon eggs about 18 days, and larger birds can require significantly longer. Without knowing the species or how far along the egg is, you’d be guessing at every variable. The Cornell Lab of Ornithology explicitly advises against trying to hatch wild bird eggs at home.
Even if you did manage to hatch a chick, raising it presents a whole new set of challenges. Nestlings need species-appropriate feeding schedules (sometimes every 15 to 20 minutes during daylight hours), and improper nutrition during the first days of life can cause permanent developmental problems.
It’s Illegal to Keep Most Wild Bird Eggs
In the United States, the Migratory Bird Treaty Act makes it illegal to possess, collect, transport, or sell the eggs of any native migratory bird species without a federal permit. This law covers the vast majority of wild birds you’d encounter in your yard, from robins and sparrows to hawks and herons. It applies to eggs, nests, feathers, and the birds themselves.
The law exists because egg collecting was a major threat to bird populations in the early 20th century, and enforcement is still active. The prohibition applies to native species specifically, so eggs from non-native birds like house sparrows or European starlings aren’t covered. But unless you’re certain of the species, the safest legal position is not to take the egg.
When to Contact a Wildlife Rehabilitator
There are a few situations where professional help is warranted. If a nest has been destroyed by a storm, construction, or a predator and intact eggs remain, a licensed wildlife rehabilitator can take them. If you know for certain that both parent birds are dead (you found their remains nearby, for example), a rehabilitator is the egg’s only realistic chance. The U.S. Fish and Wildlife Service requires that a federally permitted rehabilitator handle the removal and care of eggs or nestlings from active nests when intervention is necessary.
You can find a licensed rehabilitator through your state wildlife agency’s website or by searching the directory at ahnow.org (Animal Help Now). Call before bringing anything in. Many rehabilitators have limited capacity and may ask you specific questions about the situation before accepting an egg.
How to Check if an Egg Is Still Viable
If you’re trying to determine whether an egg is worth bringing to a rehabilitator, a technique called candling can help. In a dark room, hold a bright flashlight or phone light against the shell. A developing embryo will make the egg appear dark and opaque, and you may see a network of blood vessels. A clear egg with no visible structures is either infertile or contains an embryo that died very early. An egg that smells bad or has visible discoloration is not viable and may contain bacteria.
Keep in mind that candling works best on lighter-colored shells and becomes more informative as the embryo develops. In the first day or two, even a fertile egg can look clear.
Hygiene When Handling Wild Eggs
Wild bird eggs can carry Salmonella and other pathogens on their shells. The CDC recommends washing your hands thoroughly with soap and water after handling any wild bird, egg, nest, or feeder. If you need to move an egg, wear gloves or use a plastic bag over your hand. Avoid touching your face, food, or mouth before washing up. Children and people with weakened immune systems are at higher risk from these bacteria, so keep kids from handling found eggs directly.