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This Concept Map, created with IHMC CmapTools, has information related to: 7.2b Migration, by a wide range of animals including ruby-throated hummingbird, by 2 (non-mutually exclusive) hypotheses being Temperate Origins Hypothesis, migration evolved through a geographic shift from the tropics to the temperate breeding grounds to take advantage of the rich bounty of food resources for reproduction in the temperate regions during the breeding season. for which there is evidence for both (details are not important), Mechanisms of Migration including "nativagation", environmental cues are used including olfactory, environmental cues are used including magnetic, the movement away from and subsequent return to the same location on an annual basis (alternating between non-breeding and breeding locations) for which the evolution of migration, by a wide range of animals including butterflies, Temperate Origins Hypothesis which states migration evolved through a shift toward the tropical wintering grounds from the temperate breeding grounds to take advantage of the milder climate during the nonbreeding season., the movement away from and subsequent return to the same location on an annual basis (alternating between non-breeding and breeding locations) involve Mechanisms of Migration, 7.2b Migration: (which is different from dispersal) is defined as the movement away from and subsequent return to the same location on an annual basis (alternating between non-breeding and breeding locations), the movement away from and subsequent return to the same location on an annual basis (alternating between non-breeding and breeding locations) for which the Benefits must outweigh the Costs, the animal not only knowing it direction of movement, but also knowing its location along the migratory path (= a map) for which environmental cues are used, Benefits being increased access to resources such as food and water, by 2 (non-mutually exclusive) hypotheses being Tropical Origins Hypothesis, Tropical Origins Hypothesis which states migration evolved through a geographic shift from the tropics to the temperate breeding grounds to take advantage of the rich bounty of food resources for reproduction in the temperate regions during the breeding season., Benefits being movement from deteriorating weather conditions (caused by seasonal cycles) to areas providing more tolerable weather conditions, environmental cues are used including infrared radiation, "orientation" which requires the animal knowing the direction of its movement along the migratory path (= a compass), by a wide range of animals including bar-tailed godwit