bird is

• Old birds are not to be caught with chaff .
  有经验的人不易受骗上当。
• The birds were singing and the bees buzzing .
  鸟儿在歌唱，蜜蜂在嗡嗡叫。
• A number of birds are circling overhead .
  很多鸟在头顶上空盘旋。
• The birds are busy building their nests .
  小鸟们在忙着搭窝。
• "the bird is a great help," the old man said .
  “老鹰真是得力的帮手，”老头儿说。
• That bird is the trial of my life .
  那只鸟真要我的命。
• Sea birds were nesting there .
  海鸟正在那儿营窝做巢。
• I see . this is why the bird is very , very fat .
  我明白了，这就是为什么每只鸟都很肥实。
• Birds were singing merrily .
  鸟儿在快活地歌唱。
• The birds were hopping and twittering among the bushes .
  小鸟在树丛中跳来跳去，叽叽喳喳。