Owls (Strigidae)

Baby great horned owls: from egg to fledgling

A Great Horned Owl lays 1–4 eggs. They hatch after 28–37 days, and the young leave the nest 42–49 days later — about 70–86 days from egg to fledgling.

Great Horned Owl, verified photograph
Adult Great Horned Owl — photo: Wikimedia Commons
Eggs per clutch
1–4 eggs
Incubation
28–37 days
Time in the nest
42–49 days
Egg to fledgling
About 70–86 days
Broods per year
1 per season
Nest
Reuses old hawk, crow or heron nests; also ledges and cavities
Uses nest boxes
No

Stage by stage

  • Eggs (28–37 days): 1–4 eggs per clutch. Most songbirds start incubating when the last or second-to-last egg is laid, so the young hatch close together; owls and hawks start with the first egg, so their chicks hatch days apart.
  • Nestlings (42–49 days): the young hatch with little or no down and their eyes closed. They grow fast on a diet the parents bring in. In the breeding season great horned owls mainly eat rabbits, rats, snakes and frogs.
  • Fledglings: after leaving the nest, young great horned owls are fully feathered but short-tailed and clumsy. They spend days to weeks on low branches or the ground while the parents keep feeding them.
  • More broods: 1 per season.

When great horned owls nest, state by state

Nesting starts earliest in Arkansas (Jan) and latest in Alabama (Apr). Months are estimates from regional breeding data shifted for latitude.

State / provinceNesting season
AlabamaApr–Apr
AlaskaFeb–Apr
AlbertaFeb–Apr
ArizonaApr–Apr
ArkansasJan–Apr
British ColumbiaFeb–Apr
CaliforniaApr–Apr
ColoradoJan–Apr
ConnecticutJan–Apr
DelawareJan–Apr
FloridaApr–Apr
GeorgiaApr–Apr
IdahoJan–Apr
IllinoisJan–Apr
IndianaJan–Apr
IowaJan–Apr
KansasJan–Apr
KentuckyJan–Apr
LouisianaApr–Apr
MaineFeb–Apr
ManitobaFeb–Apr
MarylandJan–Apr
MassachusettsJan–Apr
MichiganJan–Apr
MinnesotaFeb–Apr
MississippiApr–Apr
MissouriJan–Apr
MontanaFeb–Apr
NebraskaJan–Apr
NevadaJan–Apr
New BrunswickFeb–Apr
New HampshireFeb–Apr
New JerseyJan–Apr
New MexicoJan–Apr
New YorkJan–Apr
Newfoundland and LabradorFeb–Apr
North CarolinaJan–Apr
North DakotaFeb–Apr
Northwest TerritoriesFeb–Apr
Nova ScotiaFeb–Apr
OhioJan–Apr
OklahomaJan–Apr
OntarioFeb–Apr
OregonJan–Apr
PennsylvaniaJan–Apr
Prince Edward IslandFeb–Apr
QuebecFeb–Apr
Rhode IslandJan–Apr
SaskatchewanFeb–Apr
South CarolinaApr–Apr
South DakotaJan–Apr
TennesseeJan–Apr
TexasApr–Apr
UtahJan–Apr
VermontFeb–Apr
VirginiaJan–Apr
WashingtonJan–Apr
West VirginiaJan–Apr
WisconsinFeb–Apr
WyomingFeb–Apr
YukonFeb–Apr

Found a baby Great Horned Owl?

  • Feathered, hopping, can grip your finger: a fledgling. This is a normal stage. Keep pets and children away and watch from a distance; the parents are usually close by.
  • Bare skin or only pin feathers: a nestling that fell. If you can see the nest, put it back. Touching it won't make the parents abandon it — that is a myth.
  • Injured, cold, covered in flies, or caught by a cat: contact a licensed wildlife rehabilitator. In the US and Canada, ahnow.org finds the nearest one.
  • Don't give water or food. Baby birds can choke, and the wrong food can kill them.

More about great horned owls

Frequently asked

How long do baby great horned owls stay in the nest?

About 42–49 days after hatching. Eggs take 28–37 days to hatch, so it is roughly 70–86 days from the last egg to the young leaving.

How many eggs does a Great Horned Owl lay?

1–4 eggs per clutch, with 1 per season.

Where do great horned owls nest?

Reuses old hawk, crow or heron nests; also ledges and cavities.

What should I do if I find a baby Great Horned Owl on the ground?

If it has feathers and hops, it is a fledgling and its parents are almost certainly nearby — leave it. If it is naked or has pin feathers, put it back in the nest if you can. Call a licensed wildlife rehabilitator if it is injured.