Aspen trees, Populus tremulus, have leaves that are famed for shaking in the slightest breeze.
A tree that loses and regrows leaves each year is called aDeciduous Tree
Leaves of Ficus religiosa tree
because if they had a few giant leaves they would die too quickly.The reason they would is because in the fall the leaves wilt and drop off the tree, and the only thing that can feed the tree is it's leaves. And since there would be only a few leaves, the tree would die too quickly before it can grow more.That's why they have many small leaves instead.
A holly tree typically has simple leaves. Each leaf is usually oval or elliptical in shape with a smooth margin.
gum tree (Australian) Green Ash Tree
The quiver holds arrows. Quiver also means "to shake or tremble."
Shake Tremble Jittery
The Quiver Tree is found in North-Westen parts of Namibia
Shake Tremble Jittery
to quiver or shake a lot and to vibrate
Wave your mouse over the leaves at the top of the tree
to quiver or shake a lot and to vibrate
Another word for vibrate or shake is tremble or quiver.
quiver
What you are probably seeing is when the young ones all look like females and when they are going to be fed you could say they get "excited" and shake and quiver.
quiver either means... a quiver of arrows. wich is the plural noun of the word arrow. or if somebody quivers it is a verb and it is when they shake. usually because the person is cold or scared.
Vibrate, shudder, tremor, jitters.