What does barry see when he leaves the hive for the first time

Tennis ball, flowers, and some other stuff.

answer; i believe the answer is hydraulic action;

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )