Chipping Sparrow eggs
Pale blue-green with sparse dark brown and black marks, mostly at the large end, about 0.63–0.75 inches long — roughly the width of a US quarter. A Chipping Sparrow lays 2–7 eggs, and they hatch after 10–15 days.
- Color
- Pale blue-green with sparse dark brown and black marks, mostly at the large end
- Length
- 0.63–0.75 in (16–19 mm)
- Width
- 0.51–0.55 in (13–14 mm)
- Eggs per clutch
- 2–7 eggs
- Incubation
- 10–15 days
- Broods per year
- 1–2 per season
- Nest
- Loose cup lined with hair, 3–10 ft up in conifers or shrubs
How to recognise a Chipping Sparrow egg
- Color: pale blue-green with sparse dark brown and black marks, mostly at the large end. Markings vary between females and are often heaviest around the wide end; the same female tends to lay a similar pattern every time.
- Size: 16–19 mm long by 13–14 mm wide. For scale, a US quarter is 24.3 mm across, so this egg is roughly the width of a US quarter.
- Where you find it: loose cup lined with hair, 3–10 ft up in conifers or shrubs. Chipping sparrows do not normally use nest boxes.
- Clutch: 2–7 eggs. A nest with far more eggs than this may hold eggs from two females, or a cowbird egg laid by a brood parasite.
Eggs that look similar
These species lay eggs in the same color group, sorted by how close they are in length. Size and nest site usually settle it.
| Species | Egg | Length |
|---|---|---|
| Chipping Sparrow | pale blue-green with sparse dark brown and black marks, mostly at the large end | 16–19 mm |
| American Goldfinch | pale bluish white, sometimes with faint spots | 15–17 mm |
| Eastern Bluebird | pale blue, occasionally white | 18–21 mm |
| Gray Catbird | turquoise or greenish blue, unmarked | 21–26 mm |
| Wood Thrush | pale blue or blue-green, unmarked | 24–28 mm |
When chipping sparrows lay eggs, state by state
Laying starts earliest in Alabama (Mar) and latest in Alaska (May). Months are estimates from regional breeding data shifted for latitude.
From egg to fledgling
Eggs hatch after 10–15 days and the young leave 9–12 days later. See the full baby Chipping Sparrow guide for nestling stages and what to do if you find one on the ground.
Found eggs in your yard?
- Leave them. Parents often step away for long stretches, especially before the full clutch is laid, because most songbirds do not start incubating until the last or second-to-last egg.
- A single egg on the ground is usually lost for good. Eggs cannot be hatched at home, and possession of native bird eggs is illegal without a permit.
- If a nest is somewhere inconvenient, wait it out. Most small songbirds are done in three to five weeks.
- Watch from a distance and keep pets indoors. Repeated visits can lead predators to the nest.
Questions
Frequently asked
What color are Chipping Sparrow eggs?
Pale blue-green with sparse dark brown and black marks, mostly at the large end.
How big is a Chipping Sparrow egg?
About 0.63–0.75 in long and 0.51–0.55 in wide (16–19 × 13–14 mm) — roughly the width of a US quarter.
How many eggs does a Chipping Sparrow lay?
2–7 eggs per clutch, usually one egg a day, with 1–2 per season.
How long until Chipping Sparrow eggs hatch?
Incubation takes 10–15 days. The young then stay in the nest 9–12 days — about 19–27 days from incubation to leaving.
Can I move or touch a Chipping Sparrow nest with eggs?
No. Native birds, their nests and eggs are protected under the Migratory Bird Treaty Act. Wait until the young have left before removing an old nest.
Sources
- Cornell Lab of Ornithology — All About Birds: Chipping Sparrow life history
- U.S. Fish & Wildlife Service — Migratory Bird Treaty Act
Timing reflects typical patterns for the region as a whole; local dates vary with elevation and year. Check the linked eBird bar charts for your county.