Least ( dominicus) Conservation Concern Category: (5 ; 3 within plan area) High Concern

Population Trend (PT) Global Range (Harrison 1983; inset=plan area range)

T. dominicus dominicus—unknown (Delany and Scott 2002) T. dominicus brachypterus—unknown (Delany and Scott 2002) T. dominicus bangsi—unknown (Delany and Scott 2002)

“expected to be stable…” (O’Donnel and Fjeldsa 1997)

Trend estimated to be declining (Marshbird Workshop 2005)

PT FACTOR SCORE=4

Population Size (PS) Breeding Distribution (BD)

T. dominicus dominicus--<10,000 total T. dominicus dominicus—N Caribbean Islands individuals (Delany and Scott 2002: (Delany and Scott 2002) International, unpub. info.) T. dominicus brachypterus—S USA, , T. dominicus brachypterus--<10,000 total Central America (Delany and Scott 2002) individuals (Delany and Scott 2002: Wetlands T. dominicus bangsi—Baja California, Mexico International, unpub. info.) (Delany and Scott 2002) T. dominicus bangsi--<10,000 total individuals (Delany and Scott 2002: Wetlands International, unpub. 1,835,700 km2 (plan area distribution; estimated info.) from range maps)

“common locally…the population of all Breeding range estimated to be smaller and subspecies combined (5) has been estimated at about more local than depicted by general range maps 20,000 (but may be considerably larger)…” (O’Donnel (Marshbird Workshop 2005) and Fjeldsa 1997) BD FACTOR SCORE=4 PS FACTOR SCORE=3 Non-breeding Distribution (ND) Threats to Breeding Populations (TB) T. dominicus dominicus—N Islands “apparently quick to adapt to environmental (Delany and Scott 2002) changes…” (O’Donnel and Fjeldsa 1997) T. dominicus brachypterus—S USA, Mexico, Central America (Delany and Scott 2002) “flooding of nest reported…hunting and T. dominicus bangsi—Baja California, Mexico persecution by humans occurs in much of the range…” (Delany and Scott 2002) (Storer 1992) 1,835,700 km2 (plan area distribution; estimated TB FACTOR SCORE=4 from range maps)

ND FACTOR SCORE=4 Threats to Non-breeding Populations (TN)

“killed in very cold winters…” (Storer 1992)

TN FACTOR SCORE=4

1 Literature Cited: Storer, Robert W. 1992. Least Grebe (Tachybaptus Delany, S. and S. Scott. 2002. Waterbird Population dominicus). In The Of North America, Estimates – Third Edition. Wetlands No.24 (A.Poole and F. Gill, eds.). The Birds International Global Series No. 12, of North America, Inc., Philadelphia, PA. Wageningen, The Netherlands. Pp: 24 O’Donnel, C. and Fjeldsa, J. 1997. : Status Harrison, P. 1983. Seabirds: an identification guide. Survey and Conservation Action Plan. Pp: Houghton Mifflin Co., New York, NY. Pp: 18 412

2