Artificial Bird Nests Have Been Used Extensively When Studying Predator

Essay

Artificial bird nests have been used extensively when studying predator behavior.Biologists have assumed predators will find and respond to artificial and natural nestsin the same way. In a study to test this assumption the predation of 27 AmericanRobin (Turdus migratorius) nests and 27 artificial wicker-basket nests werecompared. Artificial nests were placed 30m from existing robin's nests in a randomlychosen direction. The natural nests and artificial nests were checked at 5-dayintervals, and the number of nests (out of 27) that had been disturbed by predators inthe interval was noted. The results are as follows: (a) Using a single set of axes, construct time series plots for (a) the number of naturalnests disturbed by predators and (b) the number of artificial nests disturbed bypredators.(b) Does it appear that the artificial and natural nests have the same pattern ofpredation through time?
Justify your answer by appealing to specific aspects ofyour plot in part (a).