making …low-level glides

English as a Second Language English Vocabulary, Grammar and Idioms
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Would you tell me whether I am right with my interpretation of the expression in bold in the following sentence? This kind of thinking, he found, is not the way to make one’s self popular with other birds. Even his parents were dismayed as Jonathan spent whole days alone, making hundreds of low-level glides, experimenting.

glide(n) = a descending flight path of a glide, such as a shallow glide

glide (v) refers to smooth, free-flowing, seemingly effortless movement:

making …low-level glides = …doing descending hang gliding = flying like a glider = gliding

glide = to fly without propulsion; to descend in a glide

Thanks for your efforts.

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making hundreds/ of low-level /glides
Practising over and over / flying very close to the land rather than high in the sky / without visible propulsion or movement of his wings, by using the currents of air.