4. According to the reading, brook parasite refers to the phenomena that a bird relies on other birds for parenting their children.
The professor explains this concept by giving two examples.
First, the professor describes the cowbird. This bird lays its eggs on the songbird's nest. If the Generally, songbirds find it hard to recognize which one is their own eggs does not detectforeign eggs, so that they it incubates the cowbird's eggs and feeds young cowbirds together with their babies. This is disadvantageous to the songbird's children because young cowbirds eat a lot and even push other birds to fall to the ground.
Second, the professor describes the duck which lays its eggs on other bird's nest. The interesting thing is that young ducks leave the nest just after hatching and can fend for themselves at an early age. This means that the brood parasite of the duck does not have an adverse effect on the host bird.
These two examples illustrate brook parasite.
* Cowbirds의 새끼의 사이즈가 크고, 먹성이 좋고, 생존에 있어 우성이라는 면을 강조해주시는 것이
중요합니다. 또한 두 가지 다른 동물의 parasite case를 설명하실 때에 host에 영향을 미치는지 아니면
그렇지 않은지에 대해 내용의 초반에 명시해주셔야 합니다.