Romance

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When zebra finches( Australian weaverbird with markings like a zebra’s) pair off with mates of their own choosing, rate of monogamy and parental care rise up. As a result, their  eggs are more likely to be fertilized, perpetuating their genes through their thriving offspring.Thus, evolution permits choosiness , a costly waste of time and energy.

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There is a higher level of infidelity in Australian weaverbirds from non-chosen (arranged or forced marriage) pairs – interestingly females roam less than male birds.

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