求偶期是指动物性成熟后追求异性，寻求配偶的时期。动物求偶期多发生在春天，由于春暖花开，万物复苏，所以很多动物开始进行交配繁衍下一代。
研究人员称，轻柔的鸣叫通常意味着求偶期对雌性的呼唤，因而当另外一只雄性听见之后，它会以为有别的雄性企图把它的配偶从眼皮底下偷走。
Whispered songs are usually meant for females during courtship, the researchers say, so when another male hears it, he thinks someone is trying to steal his mate right from under his beak.
在发情期，大野猪们会为求偶而展开激烈的争斗。
During the rutting season the big boars have the most terrible mating battles.
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