Multiple Choice
Which of the following is a common strategy used by adult moths to survive predation by bats?
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49. Animal Behavior
Animal Behavior
Multiple Choice
At what age do male baby cardinals typically begin to develop their characteristic red plumage?
A
Between 9 and 12 months old
B
After 2 years
C
At hatching
D
Around 12 months old
Verified step by step guidance1
Understand the life cycle of cardinals: Male baby cardinals do not develop their characteristic red plumage immediately after hatching. Instead, they go through a juvenile phase where their feathers are brownish and less vibrant.
Recognize that plumage development is linked to maturity: The red plumage in male cardinals is a secondary sexual characteristic that typically develops as they approach adulthood, which is around 9 to 12 months of age.
Eliminate incorrect options: 'At hatching' is incorrect because cardinals are born with downy feathers, not red plumage. 'After 2 years' is incorrect because male cardinals develop their red plumage much earlier than this. 'Around 12 months old' is a more specific version of 'Between 9 and 12 months old,' which aligns with the typical timeline.
Focus on the correct timeline: The development of red plumage in male cardinals is gradual and begins between 9 and 12 months, as they transition from juvenile to adult stages.
Conclude with biological reasoning: The red plumage serves as a signal of maturity and readiness for reproduction, which is why it develops during this specific age range in male cardinals.
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