Cardinals and allies (Cardinalidae)
Baby black-headed grosbeaks: from egg to fledgling
A Black-headed Grosbeak lays 2–5 eggs. They hatch after 12–14 days, and the young leave the nest 11–12 days later — about 23–26 days from egg to fledgling.
- Eggs per clutch
- 2–5 eggs
- Incubation
- 12–14 days
- Time in the nest
- 11–12 days
- Egg to fledgling
- About 23–26 days
- Broods per year
- 1 per season
- Nest
- Loose twig cup in dense trees
- Uses nest boxes
- No
Stage by stage
- Eggs (12–14 days): 2–5 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 (11–12 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 black-headed grosbeaks mainly eat beetles and caterpillars.
- Fledglings: after leaving the nest, young black-headed grosbeaks 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 black-headed grosbeaks nest, state by state
Nesting starts earliest in Arizona (Apr) and latest in British Columbia (Jun). Months are estimates from regional breeding data shifted for latitude.
| State / province | Nesting season |
|---|---|
| Arizona | Apr–Jul |
| British Columbia | Jun–Jul |
| California | Apr–Jul |
| Colorado | May–Jul |
| Idaho | May–Jul |
| Montana | Jun–Jul |
| Nebraska | May–Jul |
| Nevada | May–Jul |
| New Mexico | May–Jul |
| North Dakota | Jun–Jul |
| Oregon | May–Jul |
| South Dakota | May–Jul |
| Utah | May–Jul |
| Washington | May–Jul |
| Wyoming | Jun–Jul |
Found a baby Black-headed Grosbeak?
- 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 black-headed grosbeaks
Frequently asked
How long do baby black-headed grosbeaks stay in the nest?
About 11–12 days after hatching. Eggs take 12–14 days to hatch, so it is roughly 23–26 days from the last egg to the young leaving.
How many eggs does a Black-headed Grosbeak lay?
2–5 eggs per clutch, with 1 per season.
Where do black-headed grosbeaks nest?
Loose twig cup in dense trees.
What should I do if I find a baby Black-headed Grosbeak 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.