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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
Sage Grouse Centrocercus urophasianus	NT	breeding	2001	2,500 males	A1, A4ii

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

Year	Protected Area	Designation	% overlap with IBA
-	Hawk Mountain	Wilderness Study Area	1
-	Hawksie-Walksie	Area of Critical Environmental Concern	<1
1931	Sheldon	National Wildlife Refuge	98
1992	Sage Hen Hills	Wilderness Study Area	<1
2012	Alkali Peak Propo	Proposed Wilderness	10
2012	Big Spring Table Propo	Proposed Wilderness	8
2012	Gooch Table Propo	Proposed Wilderness	7
2012	Round Table Propo	Proposed Wilderness	6
2012	Fish Creek Table - Little Catnip Propo	Proposed Wilderness	5
2012	Big Mountain Propo	Proposed Wilderness	4
2012	Sage Hen Hills Propo	Proposed Wilderness	4
2012	Rye Creek Propo	Proposed Wilderness	3
2012	Hell Creek Propo	Proposed Wilderness	2
2012	Fish Creek Mountain Propo	Proposed Wilderness	2
2012	Catnip Mountain Propo	Proposed Wilderness	2
2012	Railroad Point Propo	Proposed Wilderness	2
2012	Bateman Propo	Proposed Wilderness	1
2012	Guano Valley Propo	Proposed Wilderness	1
2012	Tenmile Propo	Proposed Wilderness	1

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sheldon NWR (USA). Downloaded from https://datazone.birdlife.org/site/factsheet/sheldon-nwr-iba-usa on 23/11/2024.