If you find a bird egg on the ground, the best thing to do in most cases is leave it alone. The egg likely fell from a nearby nest, and the parent birds may still be tending to it or will return soon. Picking it up, moving it indoors, or trying to incubate it yourself is almost always the wrong call, both for the egg’s survival and legally.
Why the Egg Is Probably Fine Where It Is
Parent birds leave their nests regularly. They fly off to feed, they get startled by a passing dog or a person walking too close, and they come back. Many species don’t even start sitting on their eggs until the entire clutch is laid, which means eggs can sit unattended for days as part of the normal nesting process. American robins, for example, often delay incubation until the last egg is laid, leaving earlier eggs cool and exposed for a week or more.
Unincubated eggs are tougher than they look. Embryos enter a state of suspended development when kept cool, slowing their metabolism almost to a halt. Most songbird eggs, like those of sparrows and finches, remain viable for 3 to 7 days without any incubation, as long as temperatures stay roughly between 50°F and 65°F. Larger species are even more resilient: duck eggs can last 10 to 14 days, and eagle eggs can tolerate over 10 days of neglect. The real danger is extreme heat (above 77°F) or freezing temperatures, which cause cellular damage.
So before you intervene, watch from a distance for at least a few hours. The parents are likely nearby and will return once they feel safe.
Touching It Won’t Make Parents Abandon It
You’ve probably heard that if you touch a bird egg, the parents will smell your scent and reject it. This is a myth. Most birds have a very limited sense of smell. Songbirds like warblers and sparrows have essentially no ability to detect human scent on their eggs or nest. Even species with a stronger sense of smell, like starlings or turkey vultures, use that ability to find food, not to screen their nests for intruders.
What does cause parents to abandon a nest is repeated disturbance. If you keep visiting the nest, standing nearby, or bringing pets close, the adults may decide the area is too dangerous. So if you’ve already touched the egg, don’t worry about your scent. Just back away and give the parents space to return.
When and How to Return an Egg to Its Nest
If you can see the nest the egg came from and it’s within reach, you can gently place the egg back. Use clean, dry hands or a soft cloth. Don’t worry about washing your hands first for the bird’s sake; just avoid rough handling that could crack the shell. Set the egg in the nest with the other eggs if there are any, and leave the area quickly.
If the nest is too high to reach safely, or you can’t find it at all, your options are limited. Placing the egg in a nearby bush or sheltered spot won’t help because the parents won’t go looking for a missing egg. At that point, the egg’s best chance is a licensed wildlife rehabilitator. You can search for one through your state’s fish and wildlife agency or the Animal Help Now app. Call ahead, because not all rehabilitators accept eggs. They’ll ask you where you found it, how long it’s been there, and whether it’s warm or cold.
Why You Shouldn’t Try to Hatch It Yourself
The urge to bring the egg inside and set up a makeshift incubator is understandable, but the odds of success are extremely low. Bird eggs need to be kept at roughly 98.6°F with precise humidity levels, and they need to be turned multiple times a day on a specific schedule. Even small temperature swings of a few degrees can kill the embryo or cause developmental problems. A desk lamp or heating pad won’t provide the consistent, controlled warmth an egg needs.
Beyond the practical difficulty, it’s illegal in the United States. The Migratory Bird Treaty Act prohibits possessing eggs of any native migratory bird species without a federal permit. This covers nearly every wild bird you’re likely to encounter, from robins and blue jays to hawks and herons. The Bald and Golden Eagle Protection Act adds further restrictions for eagle eggs, nests, and even feathers. Licensed wildlife rehabilitators have the permits and equipment to handle these situations. You don’t.
The only common exceptions are non-native species like European starlings, house sparrows, and pigeons, which aren’t protected under the MBTA. But even with these species, hatching and raising a chick requires specialized knowledge and a serious time commitment.
If the Egg Is Clearly Abandoned
Sometimes an egg genuinely has no hope of parental care. The nest was destroyed by weather, a predator raided it, or you’ve watched for a full day and no adult bird has returned. In these situations, contact a wildlife rehabilitator. When you call, they’ll help you determine whether the egg is worth attempting to save based on how long it’s been exposed and the temperature conditions.
While you wait for guidance, the safest thing is to keep the egg at a moderate temperature. If it’s cold outside, you can place it in a small box lined with soft cloth and keep it in a room that’s around 55°F to 65°F. This keeps the embryo in its natural suspended state without triggering development you can’t sustain. Don’t try to warm it to body temperature unless a rehabilitator specifically tells you to. Warming an egg starts the clock on active development, and if you can’t maintain precise conditions from that point forward, the embryo will die.
How to Tell if an Egg Is Still Alive
Without candling equipment (a bright light used to see through the shell), it’s hard to know. A viable egg typically feels slightly warm if it was recently incubated, and the shell is intact and smooth. Eggs that are cracked, leaking, or smell bad are not viable. Very lightweight eggs that feel hollow have likely dried out internally.
If you hold a flashlight flush against the shell in a dark room, you may be able to see veins or a dark mass inside a developing egg. A clear, bright interior with no visible structures usually means the egg was never fertilized or the embryo died early. This isn’t a definitive test, but it can help you decide whether calling a rehabilitator is worth the effort.