Wood-warblers (Parulidae)
Baby yellow-rumped warblers: from egg to fledgling
A Yellow-rumped Warbler lays 1–6 eggs. They hatch after 12–13 days, and the young leave the nest 10–14 days later — about 22–27 days from egg to fledgling.
- Eggs per clutch
- 1–6 eggs
- Incubation
- 12–13 days
- Time in the nest
- 10–14 days
- Egg to fledgling
- About 22–27 days
- Broods per year
- 1–2 per season
- Nest
- Cup on a horizontal conifer branch
- Uses nest boxes
- No
Stage by stage
- Eggs (12–13 days): 1–6 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 (10–14 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 yellow-rumped warblers mainly eat caterpillars and flies.
- Fledglings: after leaving the nest, young yellow-rumped warblers 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: 1–2 per season. Pairs often start a new nest soon after the first young become independent.
When yellow-rumped warblers nest, state by state
Nesting starts earliest in Arizona (Apr) and latest in Alaska (Jun). Months are estimates from regional breeding data shifted for latitude.
| State / province | Nesting season |
|---|---|
| Alaska | Jun–Jul |
| Alberta | Jun–Jul |
| Arizona | Apr–Jul |
| British Columbia | Jun–Jul |
| California | Apr–Jul |
| Colorado | May–Jul |
| Idaho | May–Jul |
| Maine | Jun–Jul |
| Manitoba | Jun–Jul |
| Michigan | May–Jul |
| Minnesota | Jun–Jul |
| Montana | Jun–Jul |
| Nevada | May–Jul |
| New Brunswick | Jun–Jul |
| New Hampshire | Jun–Jul |
| New Mexico | May–Jul |
| New York | May–Jul |
| Newfoundland and Labrador | Jun–Jul |
| Northwest Territories | Jun–Jul |
| Nova Scotia | Jun–Jul |
| Ontario | Jun–Jul |
| Oregon | May–Jul |
| Prince Edward Island | Jun–Jul |
| Quebec | Jun–Jul |
| Saskatchewan | Jun–Jul |
| Utah | May–Jul |
| Vermont | Jun–Jul |
| Washington | May–Jul |
| Wisconsin | Jun–Jul |
| Wyoming | Jun–Jul |
| Yukon | Jun–Jul |
Found a baby Yellow-rumped Warbler?
- 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 yellow-rumped warblers
Frequently asked
How long do baby yellow-rumped warblers stay in the nest?
About 10–14 days after hatching. Eggs take 12–13 days to hatch, so it is roughly 22–27 days from the last egg to the young leaving.
How many eggs does a Yellow-rumped Warbler lay?
1–6 eggs per clutch, with 1–2 per season.
Where do yellow-rumped warblers nest?
Cup on a horizontal conifer branch.
What should I do if I find a baby Yellow-rumped Warbler 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.