GPS Tracking Reveals Rare ‘Itinerant Breeding’ Behavior in California Bird.
Reproduction and migration are the two most demanding tasks in a bird’s life, and the vast majority of species separate them into different times of the year. Only two bird species have been shown to undertake what scientists call “itinerant breeding”: nesting in one area, migrating to another region, and nesting again there within the same year, to take advantage of shifting food resources.
https://www.sciencedaily.com/releases/2019/10/191015075314.htm
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