• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Tasmanian Native-hen Tribonyx mortierii	LC	resident	1998-2008	uncommon	A2, A3
Short-tailed Shearwater Ardenna tenuirostris	LC	breeding	1975-1995	242,000 breeding pairs	A4ii
Pied Oystercatcher Haematopus longirostris	LC	resident	1997-2005	675-1,454 individuals	A4i
Sooty Oystercatcher Haematopus fuliginosus	LC	resident	1997-2005	310-790 individuals	A4i
Double-banded Plover Charadrius bicinctus	NT	non-breeding	1997-2005	20-1,721 individuals	A4i
Hooded Plover Thinornis cucullatus	VU	resident	1997-2005	37-68 individuals	A1
Red-necked Stint Calidris ruficollis	NT	non-breeding	1997-2005	4,430-15,726 individuals	A4i
Pacific Gull Larus pacificus	LC	resident	1989	120 breeding pairs	A4i
Fairy Tern Sternula nereis	VU	breeding	1998-2008	289 individuals	A1, A4i
Green Rosella Platycercus caledonicus	LC	resident	1998-2008	abundant	A2, A3
Orange-bellied Parrot Neophema chrysogaster	CR	passage	2007	frequent	A1
Black-headed Honeyeater Melithreptus affinis	LC	resident	1998-2008	rare	A2, A3
Strong-billed Honeyeater Melithreptus validirostris	VU	resident	1998-2008	uncommon	A2, A3
Yellow-throated Honeyeater Nesoptilotis flavicollis	LC	resident	1998-2008	common	A2, A3
Striated Fieldwren Calamanthus fuliginosus	LC	resident	1998-2008	common	A3
Tasmanian Scrubwren Sericornis humilis	LC	resident	1998-2008	common	A2, A3
Tasmanian Thornbill Acanthiza ewingii	LC	resident	1998-2008	abundant	A2
Black Currawong Strepera fuliginosa	LC	resident	1998-2008	common	A2, A3
Flame Robin Petroica phoenicea	LC	non-breeding	1998-2008	frequent	A1
Dusky Robin Melanodryas vittata	VU	resident	1998-2008	common	A2, A3
A4iii Species group - seabirds	n/a	breeding	1975-1995	242,000 breeding pairs	A4iii
A4iii Species group - waterbirds	n/a	non-breeding	1997-2005	min 20,000 individuals	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2009) may differ.

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 area/population (10-49%)	slow but significant deterioration	medium
Agricultural expansion and intensification	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Human intrusions and disturbance	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1999	Unnamed (Duck Bay)	Conservation Area	8
1999	Lees Point	Conservation Area	1
1999	Perkins Island	Conservation Area	<1
1999	West Inlet	Conservation Area	<1
2007	Petrel Islands	Game Reserve	<1
2011	Big Bay	Conservation Area	1
2011	Kangaroo Island	Conservation Area	1
2011	Montagu Island	Conservation Area	<1
2011	Wallaby Islands	Conservation Area	<1
2011	Howie Island	Conservation Area	<1
2011	Harcus Island	Conservation Area	<1
2011	Murkay Islets	Conservation Area	<1
2011	Brick Islands	Conservation Area	<1
2011	Harbour Islets	Conservation Area	<1
2012	Shell Islets	Conservation Area	<1
2013	Montagu Beach	Conservation Area	1

Habitat1	Habitat detail	% of IBA
Marine Intertidal		major (>10)
Marine Neritic		major (>10)
Artificial/Terrestrial	Improved grassland & pasture	minor (<10)
Introduced vegetation		minor (<10)
Marine Coastal/Supratidal		minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
fisheries/aquaculture	major (>10)
hunting	minor (<10)
rangeland/pastureland	minor (<10)

Parts of four small protected areas are included but most of the IBA is private properties, some of which extend to low water mark.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Robbins Passage and Boullanger Bay (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/robbins-passage-and-boullanger-bay-iba-australia on 22/11/2024.