USGS reports that West Nile virus goes beyond crows
... Sandhill crane Blue jay Bald eagle Laughing gull Black-crowned night-heron Mallard American robin Fish crow Red-tailed hawk Broad-winged hawk Cooper's hawk Belted kingfisher Amer...Children's book explores why animals stay home to help
...r 30 years to learn, among other things, why scrub jay parents get most of the baby-sitting help from their older sons; and John Hoogland, a leading specialist on the prairie dogs of South Dakota, where a "kiss" is the identifying password for members of closely related coteries and relatives cooperative...Predators drive evolution of virtual prey appearance
...un, Bond and Kamil found unequivocal evidence that jay predation had resulted in selection for increasing both the crypticity and the variability of wing markings. Two sets of control lineages did not show similar effects. "What we found is that the moths not only get more difficult to find when the bir...Animals can be induced to cooperate if partners reciprocate and benefits accumulate
...f cooperation. The Stephens group trained the blue jay pairs to hop on one of two perches when a light came on; this led to one or more food pellets being delivered. The birds could "cooperate" by choosing a perch close to the other bird or "defect" by hopping on the perch farther from the other bird. Ne...