Grandmothers used to warn youngsters against being “a jack of all trades, and a master of none,” and with good reason, at least in the animal kingdom, according to research by Mike Singer, associate professor of biology, associate professor of environmental studies. Singer’s decade of research in the ecosystems of Connecticut forests reveals that caterpillars with finicky feeding habits avoid predation from birds, whereas those that feed generally on many plants become meals for baby birds. The “specialist” bugs are much better at survival. Singer and five collaborators published these findings in the prestigious Proceedings of the National Academy of…