Lagopus scoticus vs ptarmigan

Lagopus scoticus and ptarmigan both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lagopus scoticus	Yes	No	No	No
ptarmigan	Yes	No	No	No

As nouns, ptarmigan is a hypernym of Lagopus scoticus; that is, ptarmigan is a word with a broader meaning than Lagopus scoticus:

Lagopus scoticus: reddish-brown grouse of upland moors of Great Britain
ptarmigan: large Arctic and subarctic grouse with feathered feet and usually white winter plumage

Lagopus scoticus (noun)	ptarmigan (noun)
reddish-brown grouse of upland moors of Great Britain	large Arctic and subarctic grouse with feathered feet and usually white winter plumage