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Spizella arborea

(American Tree Sparrow)

Conservation Status

Population Analysis

  • For the 56,646 species in the Class Aves (Birds), we average 272.97 observations each in our database; for the American Tree Sparrow, we have 9,487 observations. Compared to other species in this Class, this species is moderately common.
  • A two-sample t-test can be used to determine whether the trend in observations of the American Tree Sparrow is the same as the trend in observations of Aves. Is this species just as common, as a proportion of all observations, as it once was? The answer is yes, changes in observation rate of this species do not significantly differ from changes in observation rate of its Class.

Taxonomy

Notes:

Name Status: Accepted Name. Latest taxonomic scrutiny: 17-Oct-2001

Physical Description

Family Fringillidae:

A Family of seed-eating, small to moderately large passerine birds that have strong, stubby beaks, which in some species can be quite large. They have a bouncing flight, alternating flapping with gliding on closed wings. Most sing well.

Adult:

Head: gray Crown: rufous Face: Chin: gray Eye Stripe: rufous Bill: dark Lower Mandible: dark Upper Mandible: dark Neck: Nape: gray Throat: gray Body: Back: black and rufous streaks Breast: gray with dark central spot and rufous patches on sides Flanks: rufous patches on gray Sides: rufous patches on gray Underparts: gray Tail: black and rufous with white trim on outer feathers Shape: notched.

Size/Age/Growth:

About 6.25 inches long, with a wingspan of 9.75 to 9.75 inches. Adults weigh about 0.7 ounces.

Images:

Distribution

Range and Population

North America

Habitat

Found in fields, along wood margins, and occasionally at suburban feeders.

Diet

Almost Exclusively:

Seeds Lesser Quantities of: Insects

Reproduction

  • Clutch Size: 3-5
  • Length of Incubation: 12-13 days
  • Days to Fledge: 8-10
  • Number of Broods: 1

Migration

Migratory

Similar Species

Field Sparrow

Members of the genus Spizella:

There are approximately 43 species and subspecies in this genus: S. arborea (American Tree Sparrow) · S. arborea aborea · S. arborea arborea (American Tree Sparrow) · S. arborea ochracea · S. arborea ocracea · S. atrogularis (Black-Chinned Sparrow) · S. atrogularis atrogularis (Black-Chinned Sparrow) · S. atrogularis cana · S. atrogularis caurina · S. atrogularis evura · S. breweri (Brewer's Sparrow) · S. breweri breweri (Brewer's Sparrow) · S. breweri taverneri (Brewer's Sparrow) · S. leucophrys · S. monticola · S. pallida (Clay-Colored Sparrow) · S. pallida breweri · S. pallida pallida · S. passerina (Chipping Sparrow) · S. passerina arizonae · S. passerina atremaeus · S. passerina boreophila · S. passerina cicada · S. passerina m · S. passerina mexicana · S. passerina pallida · S. passerina paserina · S. passerina passerina · S. passerina pinetorum · S. passerina ssp · S. passerina stridula · S. pinetorum · S. pusilla (Field Sparrow) · S. pusilla arenacea (Field Sparrow) · S. pusilla perisurra · S. pusilla pusilla · S. pusilla veronica · S. pusilla wortheni · S. socialis · S. taverneri · S. wortheni (Worthen's Sparrow) · S. wortheni browni · S. wortheni wortheni (Worthen's Sparrow)

Members of the genus Pipilo:

There are approximately 139 species and subspecies in this genus. Here are just 100 of them: P. aberti (Abert's Towhee) · P. aberti aberti (Abert's Towhee) · P. aberti dumeticolus · P. aberti vorhiesi · P. alberti · P. alberti alberti · P. alberti dumeticolus · P. alberti vorhiesi · P. albicollis · P. albicollis albicollis · P. albicollis parvirostris · P. chlororus · P. chlorurus (Green-Tailed Towhee) · P. chlorurus chlorura · P. chlorurus chlorurus · P. chlorurus f · P. crissalis (Inyo California Towhee) · P. crissalis albigula · P. crissalis aripolius · P. crissalis bullatus · P. crissalis carolae · P. crissalis crissalis · P. crissalis eremophilus (Inyo California Towhee) · P. crissalis megalonyx · P. crissalis petulans · P. crissalis senicula · P. crissalis ssp · P. erythrophalmus · P. erythrophthalamus · P. erythrophthalma · P. erythrophthalmos · P. erythrophthalmus (Eastern Towhee) · P. erythrophthalmus alleni (Eastern Towhee) · P. erythrophthalmus arcticus (Eastern Towhee) · P. erythrophthalmus canaster · P. erythrophthalmus carmani · P. erythrophthalmus clementae · P. erythrophthalmus consobrinus · P. erythrophthalmus curtatus · P. erythrophthalmus emberizinae · P. erythrophthalmus erythrophthalmus (Eastern Towhee) · P. erythrophthalmus erythropthalmus · P. erythrophthalmus falcifer · P. erythrophthalmus falcinellus · P. erythrophthalmus gaigei · P. erythrophthalmus griseipygius · P. erythrophthalmus leptoleuca · P. erythrophthalmus leptoleucus · P. erythrophthalmus macronyx · P. erythrophthalmus maculatus · P. erythrophthalmus magnirostris · P. erythrophthalmus megalonyx · P. erythrophthalmus megolonyx · P. erythrophthalmus montanus · P. erythrophthalmus motanus · P. erythrophthalmus oaxacae · P. erythrophthalmus oregonus · P. erythrophthalmus orientalis · P. erythrophthalmus rileyi · P. erythrophthalmus socorroensis (Eastern Towhee) · P. erythrophthalmus ssp · P. erythrophthalmus umbraticola · P. erythrophthalmus vulcanorum · P. erythrophthalmus-oca oaxacae-brunnescens · P. erythrophthamus · P. erythropthalmus · P. erythropthalmus erythropthalmus · P. falcinellus · P. fuscus (Brown Towhee) · P. fuscus albigula (Brown Towhee) · P. fuscus aripolis · P. fuscus aripolius · P. fuscus bullatus (Brown Towhee) · P. fuscus campoi · P. fuscus carolae · P. fuscus caroloe · P. fuscus compoi · P. fuscus crissalis · P. fuscus eremophilus · P. fuscus fuscus (Brown Towhee) · P. fuscus fuscus-potosinus · P. fuscus intermedius · P. fuscus jamesi · P. fuscus mesatus · P. fuscus mesoleucus · P. fuscus perpallidus · P. fuscus perpallidusx · P. fuscus petulans · P. fuscus potosinus · P. fuscus relictus (Brown Towhee) · P. fuscus senicula · P. fuscus ssp · P. fuscus texanus · P. fuscus toroi · P. fuscus van · P. hybrid · P. macronyx macronyx · P. macronyx virescens · P. maculatus (Spotted Towhee) · P. maculatus alleni

Bibliography

  • Alsop, Fred J. III. Birds of North America - Eastern Region. First American Edition. Smithsonian Handbooks. DK Publishing, Inc. 2001.
  • Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada.
  • Banks, R. C., R. W. McDiarmid, and A. L. Gardner 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. United States Department of the Interior Fish and Wildlife Service. Washington, D.C., USA. 79.
  • Ehrlich, P., Dobkin, D., and Wheye, D. (1988). The Birders Handbook: A Field Guide to the Natural History of North American Birds. New York: Simon and Schuster Inc. (info on clutch size, length of incubation, days to fledge and number of broods.)
  • Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc. (Length and wingspan info.)

More Info

Notes

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Identifiers:

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Last Revised: March 07, 2008