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The horizontal and vertical axes of a sonogram indicate what aspects of a bird’s vocalization?
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- Describe and draw a successful pitched frogA 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.Give the digrammatic representation showing T.S brain of frog through four different regions?
- Parasites are often microscopic in size but have large negative effects on their hosts. If this is true for the parasites of songbirds, what predictions follow about their effects on male song performance, and how should females respond to the song of infected males as opposed to uninfected individuals (Garamszegi 2005)? (Don't use any online source)Create a hand drawn schematic representation of the circulatory designs of the birds.Explain how an archenteron development varies in Amphibians versus in Avians.
- What is the primary physical feature in which the species of finches differ?You are a researcher studying birds in an Indonesian rainforest. You have just discovered two new species whose beaks are markedly different, which you have named Laetiphonia orthorhynchus and Laetiphonia rhamphis. In particular, the beaks of L. orthorhynchus are very long, straight and pointed, whereas L. rhamphis have beaks that are quite short, wide and curved downwards. In further studies, you find that the same gene codes for beak shape in both species. In your own words, explain at least two ways that changes in gene expression could result in the differences you observe between these two species. Make sure to be specific in how your explanation applies to the bird species in this example.How is the lunar-linked rhythm of fiddler crab courtship similar in mechanism and function to the seasonal timing of plant flowering?