How does the diet of the White-crowned Sparrow shift as fall approaches?
Answer
It pivots heavily toward seeds and grains
The diet of the White-crowned Sparrow demonstrates significant seasonal plasticity driven by resource availability and survival needs. During warmer breeding months, their diet is protein-rich, emphasizing insects and arthropods like grasshoppers and beetles, which are vital for nestlings. However, as fall arrives and they transition into their wintering territories, their intake shifts substantially toward seeds and grains, including weed seeds and leftover agricultural grains. This dietary change is essential for accumulating the necessary fat reserves required for migration or enduring colder winter conditions.
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