Concept explainers
Introduction: Song learning is a gradual process in some bird species. It takes place in stages. The newly hatched bird memorizes the song during sensitive period by listening to their parents. On becoming juvenile, they sing a subsong, a tentative note. They listen to this subsong and compare it with the song memorized in the sensitive period. After the two matches, the song is crystallized (finalized) for the entire life.
In Canary (a seed eating songbird), there are multiples sensitive periods for song learning. They incorporate new song also known as “syllables” in their song repertoire every year. In addition to this, their song also becomes flexible between breeding seasons.
Want to see the full answer?
Check out a sample textbook solutionChapter 51 Solutions
Mastering Biology with Pearson eText - Standalone Access Card - for Campbell Biology (11th Edition)
- Is this evolutionary conservation of the pecten structure evidence that natural selection might be maintaining the pecten in its present form in many bird species? Is this theory one that suggests the pecten has a significant adaptive function in birds? Do you believe that experiments might be useful in determining the adaptive function of the pecten if it indeed serves an adaptive function? Outline a simple experiment to see whether the presence of a pecten in the bird's eye is an adaptation.arrow_forwardWith your knowledge of sexual selection theory, can you formulate a hypothesis that explains why female courtship might have evolved in this species? Is there anything about pipefish biology that might support your hypothesis?arrow_forwardA region of the canary forebrain shrinks during the nonbreedingseason and enlarges when breeding season begins. This change isprobably associated with the annual(A) addition of new syllables to a canary’s song repertoire.(B) crystallization of subsong into adult songs.(C) sensitive period in which canary parents imprint on newoffspring.(D) elimination of the memorized template for songs sung theprevious year.arrow_forward
- Question #1 What is importance of pharyngeal pouches in development? Question #2 What duct empty into the common bild duct?arrow_forwardWhat is the primary physical feature in which the species of finches differ?arrow_forwardWhich stage of chimpanzee development is most similar to adult Ardipithecus ramidus? To adult Australopithecus afarensis? To adult Homo sapiens? What do these observations suggest with regards to developmental timing?arrow_forward
- Because the reproductive success of female Hanuman langurs (Semnopithecus entellus) is almost certainly lowered when a newly installed male kills their young infants, selection should favor countermeasures against infanticidal males. In this light, why might already pregnant females mate with a new male soon after a takeover even though they are not ovulating? What significance do you attach to the discovery that when mares are impregnated by stallions at stables away from their home locations, they will also copulate repeatedly with the males in their home stables upon their return?arrow_forwardWhy is it more difficult to determine the sex of a newlyhatched canary than a newborn puppy?arrow_forwardWhat do young herring gulls want when they peck the red spot on their parents' bills?arrow_forward
- What is migration? Why do animals show this phenomenon?arrow_forwardWhich levels of the classification in Figure 26.3 do humans share with leopards?arrow_forwardWhat are the evolutionary factors that caused some birds to acquire complex patterns of seasonal migration between temperate and tropical areas?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning