What are the sentences praising swallows?

1, the swallows' black feathers seem to be oiled, and their white bellies seem to be wearing white shirts.

2. Swallows wear tuxedos, the feathers on their bellies are like white shirts, their claws are very small, their eyes are extremely flexible and their mouths are very short.

3. A black feather, a pair of scissors-like tails and a pair of strong and light wings make up such a lively and lovely little swallow.

Spring has come and swallows have flown back from the south. Swallows have black and white feathers, long and narrow wings and scissors-like tails.

Swallows have a sweet voice, are handsome and smart, and can catch pests. What a lovely elf! We should protect them.

6. Swallow is a genus of passeriformes. In ancient times, people called it a seabird. There are more than 20 species in the world, such as Louyan, White Waist Swift, Domestic Swallow and Yanyan.

7. In the tender blue sky, several thin lines are connected between telephone poles, and several small black spots are parked on the lines, that is, swallows. What music you like to play!