Mariette: I was studying the communication between the parents at the nest when I noticed that sometimes, when the parent was incubating the eggs by itself, it was producing a call that was quite different to the others.
玛丽埃特:我在研究巢穴中父母之间
交流时注意到,有时
父母自己孵卵时, 它会发出与其他人完全不同
叫声。