A Bird Sanctuary Sometimes Takes Over the Care of Eggs

question 5

Multiple Choice

A bird sanctuary sometimes takes over the care of eggs or chicks of an endangered duck species if the parents are killed.They are sometimes able to use mothers of farm ducks to cross-foster the chicks, but it doesn't always work.Looking at the following data table, what is the critical period for imprinting in this species? (Note: DAH stands for "days after hatching".)

• A)The critical period extends from 1-3 DAH.
• B)The critical period extends from 3-8 DAH.
• C)The critical period ends sometime between 1-3 DAH.We can not determine from this data when the critical period begins.
• D)The critical period ends sometime between 3-8 DAH.We can not determine from this data when the critical period begins. Clarify question:

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Definitions:

Regular Event

An occurrence that happens at consistent intervals or in a predictable pattern.

Paralanguage

The aspect of spoken communication that is not formed by words themselves but is conveyed through tone of voice, loudness, pitch, and other vocal cues.

Tonal

Pertaining to the character or quality of sound, especially in music, where it refers to the organization of pitches and harmonies.

Whistled Speech

An exchange of whistled words using a phonetic emulation of the sounds produced in spoken voice.