Why is the protein from insect consumption non-negotiable during the breeding season?

Answer

To support egg production and rapidly growing chicks

During the intensive breeding season, energy demands placed upon the Black-and-yellow Tanager skyrocket far beyond maintenance levels. While fruit provides immediate energy, the substantial and complex requirements for reproductive efforts—specifically the production of eggs and the intense feeding schedules necessary to sustain rapidly developing chicks—demand high levels of protein. The consistent pursuit of insects is mandatory because only this animal matter can deliver the necessary building blocks required for growth, repair, and the substantial physiological commitment of raising offspring.

Why is the protein from insect consumption non-negotiable during the breeding season?
dietbirdanimaltanagerYellow Tanager