Bird Profile

American Robin

The most familiar bird on the lawn is one of the hardest to attract to a feeder, because almost nothing you buy in a seed aisle interests it.

The American Robin (Turdus migratorius) is a large gray-brown thrush with a brick-orange breast, roughly 10 inches (25 cm) long, and it has no interest whatsoever in your seed feeder. It eats earthworms, insects and fruit, and the way to attract it is water, mealworms, berries and unsprayed soil.

Almost everyone recognizes a robin, and almost everyone believes two things about it that are not quite right: that it means spring has arrived, and that it listens for worms.

This profile covers identification including juveniles, what robins actually eat and how to serve it, why the winter flocks confuse people, what the evidence says about worm hunting, the mud nest, and the yard features that keep robins around.

How to identify an American Robin#

Adult: gray-brown above, brick-orange to rusty below, dark head, yellow bill, white crescents above and below the eye, a white throat with black streaks, and a white lower belly and undertail that flashes when the bird flies away from you.

Male versus female: males have a blacker head that contrasts with the back and a deeper orange breast. Females are washed out in both places. The difference is real but gradual, and many birds are not safely sexed.

Juvenile: heavily spotted on a pale orange breast, with pale spangles on the back. Every summer this bird gets reported as a thrush or a "strange spotted robin". It is a robin, and it belongs to the pair on your lawn.

Robins are members of the thrush family, and their relatives show the family resemblance in shape: an upright stance, a straight thin bill and long legs built for running on the ground.

In the West, Varied Thrushes can cause a moment of doubt, but they show a dark breast band and bold orange wing stripes. On a feeder tray, the only real confusion is with a distant Baltimore Oriole, which is slimmer, bright orange and has a pointed bill.

The song is a rolling series of clear whistled phrases, often described as cheerily, cheer up, cheer up, cheerily, and it is one of the first sounds of the dawn chorus, sometimes starting well before daylight. The alarm call is a sharp, repeated tut tut tut, and a rising, whinnying laugh often accompanies a hawk or a cat.

Robins in January are normal#

The idea that a robin means spring is a habit of attention, not a fact about the bird. Most robins do not migrate out of the United States. What changes in winter is behavior, and it changes so completely that the birds appear to leave.

A winter flock will strip a crabapple, a holly or a juniper in a day or two and move on. That is why robins seem absent for weeks and then arrive by the dozen. Northern populations do shift south, so the robins on your February lawn may well be different individuals from the ones that nested there.

What to feed a robin#

Robins are soft-food birds. Their bill cannot crack a sunflower shell and they will not learn.

• Mealworms are the most reliable feeder food, live or dried. Dried worms should be soaked in warm water for 15 to 20 minutes first, which matters most during nesting when nestlings need the moisture. A mealworm feeder or any shallow dish with sides works.
• Fruit: apple halves or chopped apple, halved grapes, blueberries, raisins and currants soaked until soft. Details on which fruits are safe are in fruit for birds.
• Suet crumbles or nuggets in cold weather, offered on a tray rather than in a cage.
• Nothing from the seed aisle. Sunflower, millet, nyjer, corn and mixes are all ignored.

Serve it low and open. A platform feeder at waist height or a tray directly on the ground suits a bird that spends its life walking. The mealworm technique that works for robins is the same one used for bluebirds: put out a small measured amount at the same time each morning until the birds start waiting for it, described in how to attract bluebirds.

Water does more than food#

If you do one thing for robins, put out a bird bath. Robins drink often and bathe with real enthusiasm, sometimes several times a day, and they will use a bath in a yard with no feeders at all.

What they need is shallow: 1 to 2 inches (2.5 to 5 cm) of water, a rough non-slip surface, and a rim wide enough to stand on. Sloped sides beat a flat-bottomed bowl. Full sizing in bird baths.

In winter, water is scarcer than food across most of the country, and an ice-free bath will pull in a flock that ignores every feeder you own. A thermostatically controlled heater or a heated bath is the practical answer; see winter water and heated bird baths. Cold-weather feeding for the rest of your birds is covered in winter bird feeding.

Does a robin listen for worms?#

The classic image is a robin freezing, cocking its head to one side, then stabbing into the turf. The natural reading is that it is listening. The evidence says mostly not.

A robin's eyes sit on the sides of its head, so tilting the head is how it aims one eye at the ground. Experiments dating back decades, in which researchers systematically removed visual, olfactory and vibration cues, pointed to vision as the primary sense: robins detect the small soil movements, casts and burrow openings that a worm leaves behind.

Later work complicated that neatly. Robins tested with worms buried under covers they could not see through still found them at better than chance rates, and losing the auditory cue hurt their success. So hearing genuinely contributes.

The honest summary: a robin hunting on your lawn is looking first and listening second. Watch one closely and you will see the run-stop-tilt rhythm repeat every few feet, with a strike in maybe one attempt out of several.

Nesting#

Robins build a sturdy cup of grass and twigs plastered with mud and lined with fine grass. The mud is diagnostic and it is why nests survive storms and get reused as foundations by other birds.

Sites are open and often uncomfortably close to people: porch light fixtures, gutters, window ledges, wreaths on front doors, the top of a downspout, and horizontal branches 5 to 25 feet (1.5 to 7.5 m) up. Robins do not use nest boxes, though they will accept an open-fronted nesting shelf.

The clutch is three to four eggs of the pale blue-green that gave the color its name. Incubation runs about two weeks, and the young leave the nest around 13 days after hatching, before they can fly properly. A fledgling robin hopping on the ground with a short tail and a spotted breast is almost always fine and is being watched by a parent.

Most pairs raise two broods a season and sometimes three, with the male taking over the fledglings while the female starts the next nest.

Behavior worth knowing#

Window fighting. In spring, a male robin will attack his reflection in a window, a car mirror or a shiny hubcap, sometimes for weeks. It is territorial aggression, not confusion about glass. Fixes go on the outside of the glass; the anti-collision measures in preventing window strikes also work here.

Communal roosts. Outside the breeding season robins gather at night in roosts that can hold hundreds or thousands of birds, often in dense conifers or wetland trees. Flocks stream toward them at dusk from miles around.

Fermented fruit. Late-winter berries that have frozen and thawed repeatedly can ferment, and robins and Cedar Waxwings that gorge on them sometimes become visibly uncoordinated. It usually passes, though intoxicated birds are far more likely to hit windows or cars.

Ground foraging. Robins spend most of their day on open ground, which makes them one of the birds most exposed to cats. A robin cannot lift off as fast as a finch can, and a cat working a lawn edge takes a heavy toll on ground feeders. The practical reductions are in cats and birds.

Population and conservation#

The American Robin is one of the most abundant landbirds in North America, with a population in the hundreds of millions and a broadly stable trend. It adapted to lawns, parks and suburbs better than almost any native species.

That abundance hides local problems. Robins are among the most frequent victims of window collisions and outdoor cats, they concentrate lawn chemicals through the worms they eat, and they are a common host for West Nile virus. None of that threatens the species; all of it is worth acting on in your own yard.

A yard that holds robins#

• A shallow bird bath, cleaned weekly, kept ice-free in winter.
• Fruiting native shrubs and a crabapple or holly that holds fruit past December.
• Part of the lawn left unsprayed, with leaf litter under the shrubs where robins can turn it over.
• A low open tray for mealworms and chopped fruit, put out at the same time each morning.
• An open nesting shelf under an eave if robins have already tried to nest on your porch light.