Bird name:

MacGillivray's Warbler

Oporornis tolmiei

Order

PASSERIFORMES

Family

Wood Warblers (Parulidae)

Code 4

MGWA

Code 6

OPOTOL

ITIS

178940

Breeding Location:

Forest edge, Bushes, shrubs, and thickets

Breeding Type:

Monogamous, Solitary nester

Breeding Population:

Fairly common

Egg Color:

White to creamy white with brown markings

Number of Eggs:

3 - 6

Incubation Days:

Egg Incubator:

Female

Nest Material:

Stems and dried grasses lined with mammal hair, rotlets, and grasses.

Migration:

Migratory

RECOMMENDED PRODUCTS

General

MacGillivray's Warbler: Medium-sized warbler with olive-green upperparts and yellow underparts. White eye-ring is broken and slate gray hood extends to upper breast where it darkens to black. Female is similar but paler. Winter adult has paler hood and less distinct eye-ring.

Range and Habitat

MacGillivray's Warbler: Breeds from Alaska and the Yukon south to California and central New Mexico. Spends winters in the tropics. Preferred habitats include coniferous forest edges, burns, brushy cuts, or second-growth alder thickets and streamside growth.

Breeding and Nesting

MacGillivray's Warbler: Three to six brown marked, white to creamy white eggs are laid in a grassy cup nest built close to the ground in a bush or tall weeds. Eggs are incubated for 11 days by the female.

Foraging and Feeding

MacGillivray's Warbler: Eats mostly insects; forages close to the ground in dense thickets.

Readily Eats

Sugar Water, Fruit, Nut Pieces

Vocalization

MacGillivray's Warbler: Song is a rolling "swee-eet, swee-eet, swee-eet, peachy, peachy, peachy" that ascends four notes and then drops for the last two.

Similar Species

MacGillivray's Warbler: Mourning Warbler lacks broken eye-ring. Females and juveniles of the two species are difficult to tell apart and are best separated by range. Connecticut Warbler is larger and has complete eye-rings.

Percevia^® Registered in the U.S. Patent and Trademark Office.

The Percevia field guides, database and search protocol patent pending.

The best bird guide and bird watching search engine to identify birds!

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.

Underparts

Belly, undertail coverts, chest, flanks, and foreneck.

Upperparts

Back, rump, hindneck, wings, and crown.

Breast

The upper front part of a bird.

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