Avian pairs that defend resources year-round may demonstrate similar territorial behavior. We examined male and female responses of northern cardinal pairs to male simulated territorial intrusions. Pair members demonstrated comparable responses towards a male ‘intruder’, as latency to respond and proximity scores were very similar between pair members in the majority of pairs examined. Similarity in territorial behavior could be important in cardinal pairs for maintaining year-round resources.

中文翻译：

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繁殖对北方红雀，红雀红雀的领土侵略表达的相似性

全年捍卫资源的鸟类对可能表现出类似的领土行为。我们检查了北方红衣主教对男性和女性对男性模拟领土入侵的反应。配对成员对男性“入侵者”表现出类似的反应，因为在检查的大多数配对中，配对成员之间的反应潜伏期和接近度分数非常相似。领地行为的相似性对于维持全年资源的基数对可能很重要。