Clumps, waves are the two plural nouns.
On the first one is D. They don't bother anyone
Answer:
The idea that kites are skillful fliers is all throughout the text. Both in comparison and in contrast with birds, the author develops the concept of a kite as if an actual living bird, and as one, it has its own skills and characteristics.
Explanation:
The text begins with a general overview on raptors, and then he says: "The most glorious feathers of the peacock or the vibrant plumage of a bunting cannot compete with the power of a peregrine falcon or the determination of an osprey. Included in this group of hunters, however, is one bird of prey that is little known but equally impressive. The kites of the world are generally smaller than most raptors, but just as astonishing in skill and grace as any other hunter of the skies." Here, we have the very first moment in which kites are seen as skillful fliers.
Then, he/she goes on with its characteristics and the author itself states that "kites are generally masterful in the air and represent a group of birds that are among the most acrobatic of fliers." To continue with this idea of kites as living birds, the author claims "if you are lucky enough to see one in flight, you will be amazed at the quick turns, graceful moves, and speedy pursuits of this bird". With this, he/she's comparing a situation which sightseers are very familiar with: the difficulty of seeing the most majestic birds. "Look for them above large fields, especially during the summer" completes this concept by giving you the place where you can find them, because he/she knows they are graceful and you should not miss them.
Finally, the author gives us the idea of kites being like birds when he describes them physically and compares them with "common birds" which cannot catch their preys while flying: "Both kites are known to eat while flying, unlike most other birds of prey. This practice conserves energy and allows them to hunt almost continuously".
