The Great Knot is the largest of the calidrid birds and grows to 26–28 cm long, with a wingspan of approximately 58 cm. Females are slightly larger than males. The bill is black, and slightly downward curved and tinged green at the tip. The eye is brown, legs and feet dark greenish-grey. The bird has noticeable breeding, non-breeding and juvenile plumages.
Great Knot |
Calidris tenuirostris
Status: Critically Endangered on the EPBC Act list
Government evidence of impact of climate change:
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IUCN Red List Assessment, Calidris tenuirostris
The species is also potentially threatened by climate change because it has a geographically bounded distribution its global distribution is restricted to within c. 10o latitude from the polar edge of continent and within which 20 50 of current vegetation type is projected to disappear under doubling of CO2 levels (BirdLife International unpublished data).