[TOEFL][Speaking] Q4. Bat's hunting method

The lecture introduces two distinctive hunting techniques among bats: aerial hunting and perch hunting. Aerial hunting is embraced by smaller bats, which employ ultrasonic signals to capture prey while in flight. This method is tailored for hunting smaller creatures like mosquitos, necessitating extended flight periods to secure adequate nourishment. 

Conversely, larger bats opt for perch hunting. This approach relies on their heightened olfactory and visual senses rather than ultrasonic sensors. These bats remain stationary until prey comes into close proximity, then they make their move. This strategy is particularly effective for securing larger prey, ensuring an ample food supply. 

(In essence, the lecture elucidates the dual strategies of aerial and perch hunting in the bat world. Each method is suited to the bat's size and prey, ensuring a successful and resource-efficient hunting experience.)

 

(Edit)

 

The speaker elaborates on two distinct examples that explain the hunting stretagies of bats. 

 

Commencing with the first instance, the lecturer imparts knowledge concerning aerial hunting. Aerial hunting is used by relatively smaller bats, which employ ultrasonic signals to capture prey while in flight. Since they mostly hunt small prey, they need to fly frequently.

 

Transitioning to the subsequent example, the speaker delves into the perch hunting. Perch hunting is used by relatively larger bats, which rely on their olfactory and visual senses rather than ultrasonic sensors. They don't move much when hunting, but they are efficient at taking down large prey in one go.

 

In conclusion, While there might be subtle differences in stretagies, the lecture provides intriguing examples of bats's hunting.