Age codes include HY (hatching year), indicating a bird in the calendar year of its hatching; SY (second year), indicating a bird in its second calendar year (HY/SY indicates a bird in its first plumage cycle, being HY until 31 Dec and SY after 1 Jan); TY (third year), indicating a bird in its third calendar year; AHY (after-hatching year), ...
Leif erickson and the vikings were in fact the first to discover and settle on what is now called the united states of america. Christopher Columbus is given credit for discovering the New World, but was he really the first person to step foot in this new land.
On October 16, William T. G. Morton (1819-1868) made history by being first in the world to publicly and successfully demonstrate the use of ether anesthesia for surgery. This occurred at what came to be called The Ether Dome, at Massachusetts General Hospital on patient Edward Gilbert Abbott.