Assertion: penguin's color | /r/HasProperty | muted by researcher
Facets:
value: in one experiment
type: TEMPORAL
Source sentences:
text: In one experiment, the color of eggs was muted by researchers, it was found that males were willing to exercise similar care for both large eggs and small eggs if his mate had brightly colored feet, whereas males paired with dull-footed females only incubated larger eggs.