Sterna caspia
Caspian Tern was created in 1770.
Sterna paradisaea
The scientific or taxonomic name would be Chlidonias niger.
The scientific or taxonomic name would be Sterna hirundo.
The scientific or taxonomic name would be Sterna fuscata.
The scientific or taxonomic name would be Gygis alba.
Larus cachinnans
The scientific or taxonomic name would be Pusa caspica (fomerly Phoca caspica).
another name for Antarctic TERN IS "STERNA VITTATA".
A black tern is a small bird, Latin name Childonias niger, of the tern family.
This is a Tern. Three match your description but since you talk of a black plume, it is the Elegant Tern. Two others are similar- Royal and one other.
The Caspian Tern primarily feeds on fish, which it catches by diving into the water from the air. Its diet mainly consists of small to medium-sized fish species, such as minnows and shiners. Additionally, they may also consume crustaceans and amphibians when fish are less abundant. These terns are known for their impressive hunting skills and can often be seen foraging in coastal and freshwater habitats.