That's what I thought too.
Plenty of people missed that part of the definition, and were trying to figure out the details of the rest of it. (The person who wrote the title for this thread is one who missed it.)
Some people do keep other kinds of birds, ones not considered poultry, so they...
This is not the same kind of license as a dog license.
https://www.aphis.usda.gov/aphis/ourfocus/animalwelfare/sa_awa/awa-inspection-and-annual-reports
"USDA Animal Care inspectors conduct routine, unannounced inspections of all entities licensed/registered under the Animal Welfare Act."...
Short answer: it only applies to birds that are NOT "poultry."
Here is their definition of poultry:
"Poultry means any species of chickens, turkeys, swans, partridges, guinea fowl, and pea fowl; ducks, geese, pigeons, and doves; grouse, pheasants, and quail."...
That's not the part I meant.
Here's the old version:
https://www.ecfr.gov/current/title-9/chapter-I/subchapter-A/part-1
Definitions (emphasis mine):
"Animal means any live or dead dog, cat, nonhuman primate, guinea pig, hamster, rabbit, or any other warmblooded animal, which is being used, or...