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.
Female and Male Characteristics. Like most birds in the wild, male hummingbirds wear the bright colors and the females are dull and drab, making them easy to distinguish. According to the Scientific American website, Charles Darwin believed the bright colors of the males help attract favorable mates.he male ruby-throated hummingbird has a glowing, bright red throat. The blue-throated male has a dark blue colored throat that appears black in dim light. The female ruby-and blue-throated hummingbird is fairly colorless.