Geothlypis Tolmiei – MacGillivray’s Warbler

Geothlypis Tolmiei - MacGillivray's Warbler found in the US

The MacGillivray’s warbler (Geothlypis tolmiei) is a warbler species found in the New World. These birds are lethargic and heavy warblers, preferring to stay on or on the ground most of the time, save when singing.

Quick Overview: Geothlypis Tolmiei – MacGillivray’s Warbler
Body size: Around 5.25 in (13 cm) and a weight of 11 g (0.4 oz)
Main colors: Olive-Green, Yellow, White, Gray
Range: Western United States
Migratory Bird: Yes
Best time of the year to see in the U.S.: June, July, August, September
Conservation Status: Least Concern

MacGillivray’s Warbler Description

Olive-green upperparts and yellow underparts distinguish this medium-sized warbler. The white eye-ring has been broken, and the slate-gray hood has been extended over the upper breast, where it darkens to black.

Geothlypis Tolmiei - MacGillivray's Warbler found in the US
Geothlypis Tolmiei – MacGillivray’s Warbler. Photo by: Kaaren Perry

Size

These birds have a length of 5.25 in (13 cm) and a weight of 11 g (0.4 oz). Their wings could range from 8.25 in (21 cm).

Feeding

Throughout the rest of the world, prey species include click, dung, and flea beetles, as well as alfalfa weevils and caterpillars.

Habitat

Coniferous forest edges, burns, brushy cuts, or second-growth alder thickets and streamside vegetation are preferred environments.

Behavior

It forages on or near the ground for insects. It frequently flicks its tail from side to side as it hops.

Geothlypis Tolmiei Scientific Classification

  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Aves
  • Order: Passeriformes
  • Family: Parulidae
  • Genus: Geothlypis
  • Species: Geothlypis tolmiei

Best time of the year to see

 The best time to see these birds in the United States is during the summer season (June – September).

Distribution of the MacGillivray’s Warbler in the USA

From the Northwest Territories and southeastern Alaska to northern Mexico, this long-distance Neotropical migrant breeds at low to moderate elevations among the Rocky and Sierra highlands.

The MacGillivray’s Warbler can be found in the following states in the United States – Arizona, Colorado, California, Oregon, Washington, Nevada, Kansas, Idaho, Montana, Wyoming, Utah, Texas, Nebraska, New Mexico, and Oklahoma.

Geothlypis Tolmiei – MacGillivray’s Warbler

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