Why is the high-protein intake from summer arthropods essential for the Tanager?
Answer
It is essential for the rapid growth and development of nestlings
The primary biological imperative during the summer breeding season is ensuring the successful development of the next generation. The high-protein diet derived from insects like caterpillars and spiders is mandatory because protein is the building block necessary for rapid growth rates in the nestlings. This nutrient supports tissue repair, development of musculature, and overall structural growth required for the young birds to fledge successfully, contrasting with the carbohydrate needs of the adults for their own travel.
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