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MacGillivray's Warbler

Oporornis tolmieiOrder: PASSERIFORMESFamily: Wood Warblers (Parulidae)

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:

11



Egg Incubator:

Female



Nest Material:

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



Migration:

Migratory



Splitbar

Overview

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. It forages for insects on or close to the ground. As it hops, it often flicks its tail from side to side.

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.

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Family Wood Warbler (Parulidae)_blue
Species Oporornis tolmiei
Length5.25 Inches
Wingspan8.25 Inches

MacGillivray's Warbler

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. It forages for insects on or close to the ground. As it hops, it often flicks its tail from side to side.

● Song: "swee-eet, swee-eet, swee-eet, peachy, peachy, peachy"

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

● Breeding & 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.

● 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.

Flight Pattern

Fairly swift direct flight for short distances.
MacGillivray's Warbler Body Illustration
● Range & 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.
BreedingMonogamous, Solitary nester
PopulationFairly common
MigrationMigratory
Weight0.4 Ounces