it was the popular belief that birds chose their mate for the year on february 14. since doves and pigeons mate for life， they symbolize loyalty， fidelity and love.
lovebirds， the small birds with colorful plumage， commonly found in africa， are so called because they tend to get cozy with each other and can't survive without each other.
pairs. doves……common urban birds， shy and gentle by nature， with a distinctive "cooing" call……symbolize loyalty， fidelity and love.
重点词汇
mate n. 配偶
fidelity n. 忠诚
plumage n. （鸟的）羽毛