The diploid germ cells that have the potential to develop into ova are called oogonia. In humans, all of a female's oogonia that she will make in her lifetime are created when she's still a fetus and hasn't even been born yet.
How do hummingbirds reproduce? To attract hummingbirds to a garden or feeder, rich, bright colors should be used. Red is known to attract hummingbirds from afar but does not have to be the sole color used. Hummingbirds like both annuals and perennials, as long as the colors in the flowers are vibrant.
Plants: Hummingbirds feed frequently on nectar-rich flowers, and planting flowers specifically to attract these flying jewels is an easy way to make any yard a perfect hummingbird habitat. While the color red is very attractive to hummingbirds, the most important factor is that the flowers must produce plenty of nectar. Bleeding hearts, impatiens, petunias, salvias, bee balm, columbine, cannas, viburnums, honeysuckles and many other flower, tree and shrub species will attract a variety of hummingbirds.