A ____ is a location where large groups aggregate only to attract mates. nesting site lek colony territory
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North American Red-winged blackbirds (Agelaius phoeniceus) males arrive at cattail marshes before females each spring. They actively defend areas of the marsh as individual territories. Females choose a territory (and its male) as a place to breed and build a nest. If a male has a high-quality territory, he can form pair bonds with multiple females. Nests are vulnerable to attack from raccoons and other animals. Predation of the eggs and nestlings has a serious impact on reproductive success. Nests that are concealed among the cattails and suspended over water are less vulnerable to predation. Which type of mating system do Red-winged blackbirds have?
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Male competition Male primates compete for females and always go where the females are found. Can you provide an example of places where males go to find potential females?
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During the mating season, the males of lekking species gather into small clusters of territories called leks, or arenas. Each male occupies a small space within the lek, and although the whole area may only be a few meters across, there may be thirty or more males displaying in a large lek. Males dance with frantic intensity, sometimes oblivious to most everything around them, and their intensity increases when females are present. Females visiting the lek wander among the displaying males and watch as if comparing their virtues. Eventually, a female accepts the advances of one male and mates with it. Usually, only a few males out of all those present on the lek ever successfully mate. Given the "big picture" of how sexual selection is related to other aspects of an animal's life history, which of the following is consistent with the biology of the lekking species of bird described above? The chosen male will subsequently provide protection for the female and their chicks until fledging. The males chosen by the females are typically larger in size and equipped with weapons for physical combat. The females will later display at their own leks that are observed by males. The female and male form a permanent bond that results in lifelong monogamy. The female will raise the young by herself, i.e. without any help from the chosen male.
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