A predatory bird that eats a monarch butterfly is likely to
A) die. B) experience severe vomiting. C) immediately begin a search for another monarch butterfly to eat. D) meet its protein requirement for that day.
Most forms of animal camouflage, e.g., matching background colors, masquerade, etc., were described more than a century ago.
A) Direct experimental evidence supporting their function as antipredator devices has been rather limited, but the topic is now being studied more intensively. B) Direct experimental studies have proven extremely difficult to design, so evidence for their antipredator function has remained indirect. C) Large numbers of experimental studies supporting their function as antipredator devices were performed early on, but the homogeneity of the results has caused a recent decline in such research. D) The number of experimental studies supporting their function as antipredator devices likewise been extensive.
John Endler's (1978) definition of an animal's ability to match background color as resulting from the animal's resemblance to a random sample of the visual background provides us with
A) a way to quantify the similarity between prey coloration and its background. B) the answer to questions regarding the function of the coloration. C) the most successful definition yet suggested. D) all of the above.