adj.鸟(类)的，关于鸟(类)的
n.鸟

Avian influenza, commonly known as bird flu, is a highly contagious disease that affects birds.
鸟类流感，通常称为禽流感，是一种高度传染性的疾病，影响鸟类。
Avian species like eagles and owls have excellent eyesight, enabling them to spot prey from great distances.
鹰和猫头鹰等鸟类具有卓越的视力，能从远处发现猎物。
The avian kingdom encompasses a vast diversity of creatures, from tiny hummingbirds to massive ostriches.
鸟类王国包括了从小巧的蜂鸟到巨大的鸵鸟等各种生物的极大多样性。
Avian migration patterns have been studied for decades to understand their navigational abilities and the impact of environmental changes.
几十年来，人们一直在研究鸟类的迁徙模式，以了解它们的导航能力以及环境变化的影响。
The avian respiratory system is unique, with air sacs that allow for efficient gas exchange, making them highly adapted for flight.
鸟类的呼吸系统是独特的，有气囊允许高效的气体交换，使它们高度适应飞行。
Avian eggs come in various shapes and sizes, depending on the species; for instance, ostrich eggs are much larger than those of chickens.
鸟蛋的形状和大小各异，取决于物种；例如，鸵鸟蛋比鸡蛋大得多。
Avian behavior, such as courtship displays and nest building, varies greatly across different bird species.
鸟类的行为，如求偶展示和筑巢，在不同种类的鸟中差异很大。
Conservation efforts are crucial to protect avian populations from habitat loss, pollution, and other human-induced threats.
保护工作对于防止鸟类因栖息地丧失、污染和其他人为威胁而减少至关重要。
Avian predators, like hawks and falcons, play an essential role in maintaining ecological balance by controlling rodent populations.
鹰和猎鹰等鸟类捕食者通过控制鼠类数量在维持生态平衡中起着重要作用。
Avian influenza can occasionally jump from birds to humans, posing a public health concern and necessitating close monitoring.
鸟类流感偶尔会从鸟类传播给人类，构成公共卫生问题，因此需要密切监测。