Species Comparisons • Backyard Identification
Abert’s Towhee vs Curve-billed Thrasher
Abert’s Towhee
Abert’s Towhee • Wikimedia Commons
Abert’s Towhee
Abert’s Towhee • Wikimedia Commons
Abert’s Towhee
Abert’s Towhee • Wikimedia Commons
Abert’s Towhee
Abert’s Towhee • Wikimedia Commons
Curve-billed Thrasher
Curve-billed Thrasher • Wikimedia Commons
Curve-billed Thrasher
Curve-billed Thrasher • Wikimedia Commons
Curve-billed Thrasher
Curve-billed Thrasher • Wikimedia Commons
Curve-billed Thrasher
Curve-billed Thrasher • Wikimedia Commons
Abert’s Towhee vs Curve-billed Thrasher (Melozone aberti vs Toxostoma curvirostre): The Complete Backyard Identification Guide
Field Summary
Quick Answer: The Fastest Way to Tell Them Apart
The two brown ground birds of Arizona yards. Three rules:
- Bill: short, conical, pink-based = Abert’s Towhee; longer, dark and downcurved = Curve-billed Thrasher.
- Face and breast: black mask + plain breast = Abert’s; plain face, orange-yellow eye, faintly spotted breast = Curve-billed.
- Abundance: the Curve-billed is the everyday thrasher of southwestern suburbs; Abert’s keeps to irrigated lowland yards near riverside thickets.
At-a-Glance Comparison Table
The desert-yard pair, side by side. KEY rows separate fastest.
| Feature | Abert’s Towhee | Curve-billed Thrasher |
|---|---|---|
| Scientific Name | Melozone aberti | Toxostoma curvirostre |
| Length KEY | 9.1 in (23 cm) | 11.0 in (28 cm) |
| Wingspan | 11–12 in (28–30 cm) | 13.4 in (34 cm) |
| Weight | 1.4–1.9 oz (40–54 g) | 2.5–3.1 oz (70–88 g) |
| Overall Shape | Large, long-tailed ground sparrow | Big gray-brown thrasher with a decurved bill and faint breast spots |
| Male Plumage KEY | Warm brown-gray with a black face mask around a pale-based bill and a chestnut undertail (sexes alike) | Gray-brown with faint dusky breast spots, a bright orange-yellow eye and a decurved bill (sexes alike) |
| Female Plumage | Identical to the male | Identical to the male |
| Bill Shape KEY | Conical bill, pinkish at the base | Dark, stout, distinctly downcurved |
| Tail | Long, rounded, often cocked | Long, rounded, pale-tipped |
| Core Range | Sonoran Desert riparian corridors — Arizona and small corners of neighboring states | Deserts of Arizona, New Mexico, Texas and southern Colorado — one of the most common desert yard birds |
| Migration | Non-migratory resident | Non-migratory resident |
| Feeder Presence | Ground-scratches under desert feeders for millet and scattered seed | A bold desert-yard regular: suet crumbs, fruit and scattered seed; nests in cholla cactus near homes |
| Favorite Foods | Seeds and insects from leaf litter; millet and cracked corn at feeders | Insects, seeds, cactus fruit and berries |
| Song KEY | A short accelerating series of metallic chips | A rich, lively, varied warble with quick changes of pitch |
| Flight Call | A sharp, metallic “peek” or “cheenk” | A sharp, whistled “whit-wheet” — the classic desert contact call |
| Population Trend | Stable where desert riverside vegetation survives | Stable and common; adapts well to suburbs |
Male Field Marks, Side by Side
Abert’s Towhee — Male
Melozone aberti
- Black face mask framing the pale-based bill.
- Warm brown-gray body, chestnut undertail coverts.
- Stays low — scratching in riverside thickets.
Curve-billed Thrasher — Male
Toxostoma curvirostre
- Gray-brown thrasher with faint spots on the breast.
- Orange-yellow eye and a stout downcurved bill.
- The common thrasher of southwestern yards and cholla flats.
Female & Juvenile Marks, Side by Side
Abert’s Towhee — Female
Melozone aberti
- Identical to the male, mask included.
- Double-scratch feeding in leaf litter.
- Pairs stay in contact with soft chips.
Curve-billed Thrasher — Female
Toxostoma curvirostre
- Identical to the male.
- Nests in cholla cactus — often right in yards.
- Pairs stay together year-round on a territory.
Part-by-Part Anatomy Breakdown
Bill, eye and breast give three independent confirmations:
| Body Part | Abert’s Towhee | Curve-billed Thrasher |
|---|---|---|
| Bill | Short, conical, pinkish base | Stout, dark, distinctly downcurved |
| Face | Bold black mask around bill and eyes | Plain gray-brown, no mask |
| Eye | Dark | Bright orange-yellow |
| Breast | Plain brown | Faint dusky spots |
| Undertail Coverts | Chestnut | Pale gray-buff — not chestnut |
| Size | 9.1 in, compact | 11.0 in, longer and rangier |
| Call | Sharp metallic notes | The whistled “whit-wheet” |
Song & Call Comparison
Abert’s Towhee
Melozone aberti
Song: a short accelerating series of metallic chips, delivered from a low perch.
Calls: sharp metallic peek notes from dense cover.
Curve-billed Thrasher
Toxostoma curvirostre
Song: a rich, lively, varied warble, quicker and more abrupt than a Crissal Thrasher’s.
Calls: the sharp, far-carrying whit-wheet whistle.
Range & Seasonal Presence
Abert’s Towhee is a Sonoran Desert lowland bird — southern Arizona and small corners of neighboring states — never far from riverside thickets or irrigated neighborhoods.
The Curve-billed Thrasher covers the deserts of Arizona, New Mexico, Texas and southern Colorado, from wild cholla flats to the densest suburbs. Wherever they overlap, the Curve-billed is usually the more numerous yard bird.
Feeder Behavior & Favorite Foods
- Abert’s Towhee: scratches for millet and cracked corn under shrubs near water; a bird of greener, wetter yards.
- Curve-billed Thrasher: takes suet crumbs, fruit and scattered seed, and nests in cholla cactus right beside patios — one of the most yard-tolerant desert birds.
- Best foods: millet and corn for the towhee; suet crumbles, raisins and mealworms for the thrasher.
- Water: a ground dish serves both; the thrasher also bathes boldly in lawn sprinklers.
Temperament & Flock Behavior
Abert’s Towhees keep to cover in calm pairs, slipping between shrubs with cocked tails.
Curve-billed Thrashers are brash and inquisitive — they run across open gravel, perch on fence posts to whistle “whit-wheet”, and investigate anything new in the yard.
6-Step Backyard ID Checklist
- Bill. Short pink-based cone = Abert’s; dark downcurved bill = Curve-billed.
- Face mask. Black mask = Abert’s; plain face = Curve-billed.
- Eye color. Dark = Abert’s; orange-yellow = Curve-billed.
- Breast. Plain = Abert’s; faintly spotted = Curve-billed.
- Undertail. Chestnut = Abert’s; gray-buff = Curve-billed.
- Call. Metallic chips = Abert’s; whistled “whit-wheet” = Curve-billed.
Frequently Asked Questions
How do you tell an Abert’s Towhee from a Curve-billed Thrasher?
Abert’s has a black face mask, a short pink-based conical bill, a dark eye and a plain breast. The Curve-billed Thrasher has a downcurved bill, a bright orange-yellow eye, faint breast spots and no mask — and it is larger.
Which bird is more common in Arizona backyards?
The Curve-billed Thrasher — it thrives in suburbs everywhere in the Southwest and often nests in yard cactus. Abert’s Towhee favors irrigated lowland yards near riverside thickets.
What does a Curve-billed Thrasher sound like?
Its contact call is a sharp, whistled “whit-wheet” — one of the signature sounds of the desert Southwest. Its song is a rich, varied warble. Abert’s gives metallic chips and an accelerating trill.
Do both birds feed on the ground?
Yes — both are ground foragers. The towhee double-scratches in leaf litter for millet and corn; the thrasher probes soil and picks up suet crumbs, fruit and insects.
Can both species nest in a yard?
Yes. Curve-billed Thrashers famously nest in cholla cactus and dense shrubs near homes; Abert’s Towhees nest low in dense riverside vegetation near irrigated neighborhoods.
Do these birds migrate?
No — both are year-round residents of the Southwest.
Key Takeaways
- Bill: Short pink cone = Abert’s; dark downcurved = Curve-billed.
- Mask: Black face mask = Abert’s only.
- Eye: Orange-yellow eye = Curve-billed; dark = Abert’s.
- Breast: Faint spots = Curve-billed; plain = Abert’s.
- Commonness: Curve-billed is the everyday suburban thrasher.
- Call: Whistled “whit-wheet” = Curve-billed.