Artificial Nest Have Often Been Used When Biologists Study Predation

question 23

Essay

Artificial nest have often been used when biologists study predation on birds. It is usually assumed that predators will respond to artificial nests in the same way they do to real birds' nests. A recent experiment was performed to check this assumption for predators of the American robin (Turdus migratorius) by comparing the egg loss in three experimental treatments: (1) natural robin's nests, (2) artificial wicker-basket nests placed 30 meters in a random direction from natural robin's nests, and (3) artificial wicker-basket nests placed in a 180 m by 240 m grid around robin's nests. The data below are cumulative counts of eggs predated (stolen or broken and eaten) at 5, 10, and 15 day points of the experiment. ​
(a)Construct a bar chart to display the cumulative counts for the natural robin nests at their 5-, 10-, and 15-day checks.
(b)Fill in the relative frequency distribution (table) representing the cumulative counts for the artificial nests in the grid. (Do not convert the table to a graph.)​

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Definitions:

Negligence Theory

A legal concept that holds parties liable for harm caused by their failure to act as a reasonable person would under similar circumstances.

Properly Manufactured

A term indicating that a product has been made according to the required standards and specifications, ensuring its safety and quality.

Warning

A statement or signal that alerts about a possible danger, problem, or other undesirable situation.

Negligence-Based

Relating to a legal claim or cause of action arising from the failure to exercise the care toward others which a reasonable or prudent person would do under similar circumstances, resulting in unintended harm.