Eastern Bluebird
Sialia sialis
"Bluebird of Happiness" · "Blue Robin"
When in Memphis
Eastern Bluebird
Look for
A small thrush with a brilliant sky-blue back and a warm rust-orange breast fading to white on the belly. Males are electric; females are a softer gray-blue with a gentler orange wash.
Often seen perched on a fence post or nest-box scanning the ground, then dropping straight down to snatch a cricket.
Size: ~7" — between a sparrow and a robin. Robin-shaped (both are thrushes) but smaller.
Listen for
- Song: a soft, warbling "cheer-cheerful-charmer" — low, liquid, melodic.
- Call: a musical "tu-wheet" — often the first sign a bluebird family is nearby.
- Their voice is gentle and easy to miss, the opposite of Blue Jays or Mockingbirds.
Where in Memphis
Open parkland with scattered trees, nest boxes, and short grass — they need a perch-and-pounce landscape.
- Shelby Farms Park — famous bluebird trail of nest boxes, a mid-South conservation success story
- T.O. Fuller State Park
- Meeman-Shelby Forest edges
- Golf courses across the metro
- Rural road edges, cemeteries, horse pastures
They're residents — the Memphis population stays year-round, but numbers swell in winter as northern birds move south.
Behavior
- Cavity nesters. They use old woodpecker holes, tree cavities, fence-post hollows — and nest boxes, which are the reason they still exist in the modern landscape.
- Perch-and-pounce hunters. They watch the ground from a low perch, then drop on insects.
- Family groups stick together. Young of the first brood sometimes help feed the second.
- Winter flocks huddle inside cavities or nest boxes on cold nights — sometimes a dozen bluebirds inside one box, stacked for warmth.
Story & folklore
The conservation comeback
Eastern Bluebirds nearly disappeared from much of the Eastern U.S. in the mid-20th century. Two causes:
- House Sparrows and European Starlings (introduced) out-competed them for cavities.
- Pesticides and habitat loss.
The population bottomed out in the 1960s. Then the North American Bluebird Society (founded 1978) launched a mass nest-box campaign across the East. Volunteers built and monitored boxes by the thousands — and the population rebounded. Today's Eastern Bluebird population is likely higher than in the 1960s, possibly higher than pre-settlement levels in some regions.
It's one of the cleanest citizen-science conservation wins in American wildlife history. And Shelby Farms Park, with its volunteer-maintained bluebird trail, is a direct descendant of that movement. The bluebirds you see on fence posts along the Shelby Farms greenline are there because Memphians built the boxes.
"Bluebird of Happiness"
The phrase traces back to Maurice Maeterlinck's 1908 play "The Blue Bird," then passed through Jan Peerce's 1948 song of the same name. The Eastern Bluebird is the species most Americans picture when they hear it. The symbol has deep roots though: Cherokee, Navajo, and other Indigenous traditions independently associated bluebirds with happiness, spring, and renewal long before the Belgian playwright.
The state bird multi-champion
Missouri and New York both claim the Eastern Bluebird as their state bird. Tennessee didn't — but the species is beloved across the mid-South.
The bluebird trail tradition
A bluebird trail is a route of nest boxes (typically 5–50) monitored weekly by a volunteer. It's one of the purest forms of citizen science in America. Monitors record eggs laid, hatched, fledged, and failures — data that feeds into long-term population studies. Memphis has active bluebird trails at Shelby Farms, several golf courses, and through the TN Wildlife Resources Agency.
Fun facts
- The blue in a bluebird isn't pigment — it's structural color (the same physics as a Mississippi Kite's gray or a hummingbird's throat). Grind up a bluebird feather and it's brown.
- Eastern Bluebirds raise 2–3 broods per year in Memphis — so a single nest box can produce 10+ bluebirds per season.
- They eat about 2,000 insects per brood while feeding young — Shelby Farms' pest-control interns.
- Bluebirds can see ultraviolet light, so male plumage probably looks even more brilliant to other bluebirds than to us.
- A bluebird's wings beat ~3 times per second in normal flight.
- Female bluebirds choose the male based on his nest-box — he finds the cavity and shows her; she inspects and decides.
- The record age for a wild Eastern Bluebird is over 10 years.
Field notes (to add)
- Bluebird trail monitoring basics (box dimensions, spacing, predator guards)
- Shelby Farms trail map / volunteer contact
- Native plant list for bluebird gardens (sumac, dogwood, pokeweed)
- Comparison with Indigo Bunting and Blue Grosbeak (all three are blue, all three visit Memphis yards)