Bird name:

Bicknell's Thrush

Catharus bicknelli

Order

PASSERIFORMES

Family

Thrushes (Turdidae)

Code 4

BITH

Code 6

CATBIC

ITIS

554148

Breeding Location:

Mountains, Forest

Breeding Type:

Monogamous, Solitary nester

Breeding Population:

Yes but uncommon

Egg Color:

Green blue to pale blue with faint brown marks

Number of Eggs:

3 - 6

Incubation Days:

13 - 14

Egg Incubator:

Female

Nest Material:

Grasses, leaves, bark, mud, and mosses.

Migration:

Neotropical Migrant

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General

Bicknell's Thrush: Small thrush with olive-brown upperparts, buff breast with brown spots, and white or buff belly. Eye has indistinct gray ring. Upper mandible is black with pale base and lower mandible is yellow with black tip. Tail and rump have rust-brown wash. Sexes are similar.

Range and Habitat

Bicknell's Thrush: Breeds from southern Quebec and the Maritimes south to northern New England and northern New York. Preferred habitats include alpine areas near tree line.

Breeding and Nesting

Bicknell's Thrush: Three to six green blue to pale blue eggs with faint brown marks are laid in a cup nest made of grass, leaves, bark, mud, and mosses and sometimes lined with a few leaves. Incubation ranges from 13 to 14 days and is carried out by the female.

Foraging and Feeding

Bicknell's Thrush: Eats insects, spiders, and earthworms; also berries and fruits in fall; forages on the ground and in shrubs.

Readily Eats

Raisins, Currants, Nut Meal

Vocalization

Bicknell's Thrush: Song is a raspy, nasally whistled series of descending phrases. Call is a two-syllable, down-slurred "vee-ah".

Similar Species

Bicknell's Thrush: Gray-cheeked Thrush is larger, with olive-gray upperparts, olive-brown tail, and gray wash on breast, sides, and flanks.

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Bird Call Credits: The Macaulay Library of Natural Sounds at the Cornell Lab of Ornithology. Martyn Stewart, http://www.naturesound.org, Redmond, Washington USA. The reuse or copying of bird calls in this database is strictly forbidden.

Upperparts

Back, rump, hindneck, wings, and crown.

Belly

The ventral part of the bird, or the area between the flanks on each side and the crissum and breast. Flight muscles are located between the belly and the breast.

Breast

The upper front part of a bird.

Lower mandible

The lower part of the bill.

Rump

The area between the uppertail coverts and the back of the bird.

Upper mandible

The upper part of the bill.

4 and 6 letter alpha codes

The four letter common name alpha code is is derived from the first two letters of the common first name and the first two letters of common last name. The six letter species name alpha code is derived from the first three letters of the scientific name (genus) and the first three letters of the scientific name (species). See (1) below for the rules used to create the codes..

Four-letter (for English common names) and six-letter (for scientific names) species alpha codes were developed by Pyle and DeSante (2003, North American Bird-Bander 28:64-79) to reflect A.O.U. taxonomy and nomenclature (A.O.U. 1998) as modified by Supplements 42 (Auk 117:847-858, 2000) and 43 (Auk 119:897-906, 2002). The list has been updated by Pyle and DeSante to reflect changes reported by the A.O.U from 2003 through 2006.

Field Guide to Birds of North America