Archives for Watch List Species

Watch List Table from Continentental Landbird Conservation Plan (2016)

Tricolored Blackbirds experience large annual breeding losses associated with crop-harvesting activities and insufficient prey abundance.

The Evening Grosbeak is featured on the cover of the 2016 PIF Landbird Conservation Plan, as it has the dubious honor of experiencing the steepest population decline (92% since 1970) of all landbirds in the continental U.S. and Canada.

Sprague’s Pipit populations have strongly declined due to the extensive conversion of native prairies to agriculture across much of their range.

While harvested landscapes have increased throughout its breeding range, the Olive-sided Flycatcher has continued to decline, suggesting that conditions on the wintering grounds may be driving its negative population trend.

As an extreme habitat specialist, the Bicknell’s Thrush has a very limited range, breeding primarily in high elevation stunted montane spruce-fir forests of the northeastern U.S. and southeastern Canada.

Le Conte’s Thrasher is an uncommon resident throughout the desert and scrub habitats of the American southwest and northwestern Mexico.

During the breeding season, Prothonotary Warblers are inhabitants of the wet forests of the eastern U.S., with the core of their breeding range in the southeast.

The Canada Warbler inhabits shady forest undergrowth year round, making this species vulnerable to forest loss. Canada Warblers spend the majority of the nonbreeding season in the northern Andes, which is among the most threatened in the world, having experienced a 90% loss of forest due to agricultural expansion (cattle, coffee, coca) and fuel wood production.

Lewis’s Woodpecker population declines are consistent with heavy loss of ponderosa pine habitat in Arizona, British Columbia, Oregon and Washington due to fire suppression, intensive grazing, and logging.