1. The hummingbird and the flower have a mutualistic econiche relationship where the bird feeds on the nectar while pollinating the flower.
蜂鸟和花朵之间存在一种互利共生的生态位关系，蜂鸟以花蜜为食，同时为花朵传粉。
2. Different species of birds have evolved different econiches to avoid competition for food within their habitats.
不同物种的鸟类在其栖息地内进化出了不同的生态位，以避免对食物的竞争。
