a small yellow canary bird perched on a tree top branch looking down

perch perched perching top tree trees branch branches trunk trunks dark look looking bright yellow canary cute adorable tiny little chirp chirping sing singing gold golden stand standing bird birds influenza flu h1n1 h5n1 common cold diseases bacteria germs carrier fly flying freely cackle call loud unhygienic hygiene cleanliness dropping droppings wild wildlife life wilderness captive captivity tag tagged beak bill wing wings feather feathers plumage colored coloured chick chicks nest nests nesting lay egg eggs tail