I like this feeder that sticks to my window where I can watch them up close.
They seems to like it too because, I have 5 other feeders in my yard, and they fight over this one.
I think I will go buy some more just like it, so they quit fighting.
Ruby-throated hummingbirds are thought to be polygynous. They do not form breeding pairs, and females provide all parental care.
Males arrive at the breeding area in the spring, and establish a territory before the females arrive. When the females return, males court females that enter their territory by performing courtship displays. They perform a “dive display” rising 8 to 10 feet above and 5 to 6 feet to each side of the female. If the female perches, the male begins flying in very rapid horizontal arcs less than 0.5 m in front of her. The male's wings may beat up to 200 times per second during these displays (the normal speed is 55-75 beats per second).
If the female is receptive to the male, she may give a call and assume a solicitous posture with her tail feathers cocked and her wings drooped. Preceding copulation, male and female face each other, alternately ascend about 10 feet and descend, eventually dropping to the ground and copulating.[4]
The nest is constructed on a small, downward-sloping tree limb 10-20 feet above the ground. It is composed of bud scales, with lichen on the exterior, bound with spider's silk, and lined with plant down (often dandelion or thistle down). Old nests may be occupied for several seasons, but are repaired annually. The female constructs the nest, as the male has left by this point. [5]
Females lay two white eggs about 12.9 by 8.5 millimeters in size, and produce 2, or occasionally 3 broods. They brood the chicks and feed them from 1 to 3 times every hour by regurgitation, usually while the female is hovering. When they are 22 to 25 days old, the young leave the nest.(0.5 x 0.3 in).

I like Dragonflies too.

Dixie