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

The site was identified as important in 2000 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
Whooper Swan Cygnus cygnus	LC	breeding	1976-1984	200 breeding pairs	B1i
Common Loon Gavia immer	LC	breeding	-	common	A4i, B1i

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2000) may differ.

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Standing freshwater, Rivers and streams, Blanket bogs, Fens, transition mires and springs	50
Rocky areas (eg. inland cliffs, mountain peaks)		40
Shrubland	Heathland	10

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	-
tourism/recreation	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Arnarvatnsheidi-Tvidaegra (Iceland). Downloaded from https://datazone.birdlife.org/site/factsheet/arnarvatnsheidi-tvidaegra-iba-iceland on 23/11/2024.