Most birds are monogamous.

大多数飞禽都是单配性的。

《牛津词典》

Most birds have to fly long distances to migrate.

大多数的鸟类不得不飞行很长的距离进行迁徙。

《柯林斯英汉双解大词典》

In fact, most birds have a very poor sense of smell, so in most cases they are unable to even notice the smell of humans on baby birds.

事实上，大多数鸟类的嗅觉都很差，所以在大多数情况下，它们甚至不能注意到人类在幼鸟身上留下的气味。

youdao

It is something to be proud of. Most of the people I work with are early birds.

VOA: special.2010.06.13

The white swan - with its long,graceful neck - is among the most beautiful of birds.

VOA: special.2010.04.11

It floats quietly on the water, unable to sing sweet songs like most other birds.

VOA: special.2010.04.11

Most birds have been found in Dorset but others are appearing in Sussex, Hampshire, Devon and Cornwall.

BBC: 'Refined mineral oils' blamed for bird contamination

Most birds have extremely flexible necks, but the owls are the avian species that have perhaps garnered the greatest attention for their neck-twisting exploits.

BBC: How owls swivel their heads

If one looks at the IUCN Red List, the global authority on threatened species, the concentrations are much higher, with 83% of the most threatened birds, 82% of the most threatened mammals, and 90% of the most threatened amphibians concentrated in the Hotspots.

FORBES: Conservation International: Stemming the Tide of Environmental Crises, Part Two