Friday, November 19, 2010

Warbler Guy, are there any New World warblers that occur in their own family and where shall I look?

The Olive Warbler, Peucedramus taeniatus , is a small passerine bird. It is the only member of the genus Peucedramus and the family Peucedramidae.

Breeding from southern Arizona through New Mexico and south into Mexico and Nicaragua, the Olive Warbler is the only member of the genus Peucedramus and the family Peucedramidae. All our other New World warblers are in the Parulidae family.

The Olive Warbler status in its one-member family is distinctive in that it's the only bird family endemic to North America (including Central America). Before it was classified into its current family, this warbler was considered a Parulidae, but DNA studies suggest that it split early in its evolutionary history from the other related passerines prior to the differentiation of the entire New World warbler/American sparrow/Icterid group.

Thus, bird taxonimists now place the Olive Warbler in a family of its own.

Like many other New World warblers, it is an insectivorous species of coniferous forests.

Though it is often said to be non-migratory, most New Mexican birds leave the state from November to late February. It lays 3–4 eggs in a tree nest.

Wednesday, November 10, 2010


Can you identify the wood-warblers in each of the following five photos?

Wednesday, November 3, 2010

Warbler Guy, can you tell me some of the most abundant wood-warblers that were seen in last year’s Christmas Bird Count?

Yes, Brent in Orange Co., CA, there’s a record of these results in the latest American Birds (110th CBC, Volume 64).

Consider the following highest totals and the corresponding location/name of the CBC:

- Olive Warbler, 9 (AZ, Green Valley-Madera Canyon)
- Tennessee Warbler, 2 (TX, Guadalupe River Delta-McFaddin Family Ranches)
- Oranged-crowned Warbler, 493 (TX, Weslaco)
- Nashville Warbler, 10 (TX, Weslaco)
- N. Parula, 18 (FL, Kendall Area)
- Yellow Warbler, 11 (CA, San Diego; FL, Coot Bay-Everglades N.P.)
- Chestnut-sided Warbler, 1 (AZ, Phoenix-Tres Rios)
- Magnolia Warbler, 3 (FL, Coot Bay-Everglades N.P.)
- Cape May Warbler, 1 (OH, Ragersville)
- Black-throated Blue Warbler, 2 (FL, Coot Bay-Everglades N.P.; Ft. Lauderdale; Kendall Area; and Key Largo-Plantation Key)
- Yellow-rumped (Audubon’s), 4,638 (CA, Orange Co.)
- Yellow-rumped (Myrtle), 7,599 (SC, Charleston)