In the scenario described, the drought wipes out the season's plants entirely, which impacts the food sources for each bird species:
- Bird A eats insects and plant seeds. Without plants, it may find some insects, but its food source of seeds would be completely gone.
- Bird B drinks flower nectar. With no plants, there are no flowers, and thus no nectar to consume.
- Bird C eats plant seeds. Like Bird A, Bird C relies on seeds that are no longer available due to the loss of plants.
Given this, the likely outcome is that:
- Bird A may find some insects to survive initially, but its population may decline due to the lack of seeds.
- Bird B will likely die due to the complete absence of nectar.
- Bird C will also die because it depends entirely on plant seeds.
Thus, the most plausible outcome is "Bird A survives; both birds B and C die."