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.
Appearance. Male and female hummingbirds can be identified simply based on the color of their feathers. Male hummingbirds have bright feathers to attract females and to deter males by expressing their dominance. A patch of brightly-colored feathers on the necks of males is known as a gorget.A gorget's color range includes red, purple, orange, blue and pink.ize. Although it is hard to tell, female hummingbirds are typically larger than males. For example, females usually weigh between 2.8 and 4.5 grams, while males weigh between 2.4 and 3.6 grams.