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The site was identified as internationally important for bird conservation in 2009 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Magpie Goose Anseranas semipalmata	LC	non-breeding (1986–2007)	10,527–71,821 birds	A4i
Wandering Whistling-duck Dendrocygna arcuata	LC	resident (1986–2007)	23,651–74,610 birds	A4i
Green Pygmy-goose Nettapus pulchellus	LC	resident (1986–2007)	1,424–4,404 birds	A4i
Hardhead Aythya australis	LC	resident (1986–2007)	11,949–51,433 birds	A4i
Pacific Black Duck Anas superciliosa	LC	resident (1986–2007)	3,211–16,333 birds	A4i
Australian Bustard Ardeotis australis	LC	resident (2005)	250 birds	A1
Black-necked Stork Ephippiorhynchus asiaticus	NT	resident (1986–2007)	55–118 birds	A1
Black-winged Stilt Himantopus himantopus	LC	resident (1986–2007)	2,249–14,622 birds	A4i
Red-capped Plover Charadrius ruficapillus	LC	resident (2005–2007)	3,670 birds	A4i
Oriental Plover Charadrius veredus	LC	non-breeding (2005–2007)	1,154 birds	A4i
Black-fronted Dotterel Elseyornis melanops	LC	resident (2005–2007)	177 birds	A4i
Sharp-tailed Sandpiper Calidris acuminata	VU	non-breeding (2005)	18,144 birds	A4i
Long-toed Stint Calidris subminuta	LC	non-breeding (2005)	355 birds	A4i

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2008) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Agricultural expansion and intensification	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Pollution	likely in long term (>4 years)	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Habitat	% of IBA	Habitat detail
Wetlands (inland)	major (>10)	Freshwater lakes & pools
Grassland	minor (<10)	Tussock grasslands

Land use	% of IBA
water management	100
rangeland/pastureland	minor (<10)

Western Australian State Government.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Argyle (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-argyle-iba-australia on 23/12/2024.