First, understand the water quality. In fact, the duck takes a sip of water after entering the water to get to know the environment here first. As long as the duck tastes the water, it will know if there is any food suitable for him. Moreover, ducks can filter out edible microorganisms and algae when drinking water, and they can also eat some small fish and shrimp. So ducks need to know clearly in advance when they arrive in a new environment. If they are hungry, they can hunt directly here.

Second, feel the water temperature. Generally, ducks like to stay in the water conservancy in summer, because it will be cooler in the water in summer, but in summer, the sun is very toxic and the water temperature is probably high, so take a sip before entering the water, so that you can feel the temperature of the water and not get burned when you jump into the water? Cooked? Yes After all, some rivers are still very hot in summer. People dare not swim, and ducks may not be able to adapt to the temperature.

Third, we should be alert to the danger of wild ducks. Although ducks like to play and hunt in the river, there are actually many natural enemies of ducks in the river. Therefore, if the duck trade rushes into the water, if there are its own natural enemies nearby, then the duck's situation is very dangerous. Moreover, in nature, every animal has a unique taste, and ducks can also perceive the taste of natural enemies.

Therefore, if you drink a mouthful of water before entering the water, you can judge whether there are natural enemies from the taste and composition of the water, and you can also judge whether it is dangerous to play in this river. If you don't feel danger within your drinking range, ducks will enter. If you feel certain danger, the duck will give up entering the water. So it's not because of thirst that ducks need a sip of water before they go into the water.