Question

period, the tawny owls environment changed.
describe how the tawny owl population changed over this time period. use the theory of natural selection to construct a possible explanation for this change.
the percentage of owls with pale gray feathers in the population. this suggests that owls with dark brown feathers were likely to survive and reproduce than owls with pale gray feathers. this may have occurred because there were trees covered with snow after the populations environment changed. so owls with pale gray feathers were likely to be for predators to see.

Explanation:

• First blank: The percentage of owls with pale gray feathers decreased (from 72% to 39%).
• Second blank: Since the percentage of dark - brown - feathered owls increased (from 28% to 61%), they were more likely to survive and reproduce.
• Third blank: If there were fewer trees covered with snow, the pale gray feathers (which might have been camouflage in a snowy environment) would be less of an advantage.
• Fourth blank: With fewer snowy trees, owls with pale gray feathers would be easier for predators to see.

Answer:

• The percentage of owls with pale gray feathers decreased in the population.
• This suggests that owls with dark brown feathers were more likely to survive and reproduce than owls with pale gray feathers.
• This may have occurred because there were fewer trees covered with snow after the population's environment changed.
• So owls with pale gray feathers were likely to be easier for predators to see.