广西大学北京校友

Something is for the birds 毫无价值的, [美口]荒唐可笑的

eat like a bird 吃得极少
a bird's eye view of  鸟瞰  
the birds and the bees  基本的性知识
birds of a feature ( flock together) 人以群分
a bird in the hand is worth two in the bush

  双鸟在林不如一鸟在手（赊三不如现二）
kill two birds with one stone 一箭双雕
be a feather in one's cap 值得骄傲的事
an early bird 早起者, 早到者,捷足先登者
the eary bird catches the worm 捷足先登

like a bird （口）一帆风顺

 a home bird 喜欢待在家里的人

bird flu 禽流感

a bird has flown （警语）要抓的人逃走了
have their wings clipped 夹住, 剪短, 修剪
eat crow[美口]忍辱, 屈服; 被迫收回自己说的话; 丢脸
spring chicken 童子鸡

be no spring chicken (尤指女子)已不年轻
for chicken feed，  chicken-feed 低微的薪水, 零钱
chicken liver鸡肝,胆小鬼
chicken out of sth [美俚]因害怕而停止做某事, 因胆小而放弃
ugly duckling 丑小鸭，年幼时不好看长大后才貌出众的人
count one's chickens before they are hatched过早乐观 /打如意算盘
chickens come home to roost 得到恶报, 归还原主
like water off a duck’s back 毫无作用
lame duck 无用的人, 任期将满的官员

a dead duck 被放弃的或将失败的计划

（take to sth ）like a duck to water 无困难地，自然地

play ducks and drakes with 浪费，挥霍