Activation energy is the amount of energy required to initiate a chemical reaction. The activation energy can be determined from reaction rate constants at different temperatures by the equation. ln(k 2 /k 1) = E a /R x (1/T 1 - 1/T 2).
Robins also eat other small insects, berries, fallen fruits, and especially Rosaceae fruit in the fall and winter. Robins cannot digest hard fruits or grains, so they stick to soft fruits and organisms with softer skeletons (Howell, 1942). http://www.bio.davidson.edu/people/vecas...
Robins have two and sometimes three clutches of eggs each year. Nests may be used for multiple clutches; first-clutch nests may be built on top of nests from the previous year. Mortality Robins have a high mortality rate, with up to 80 percent of the young dying each year.Tree squirrels, chipmunks, raccoons, magpies, crows, ravens, and jays eat robin eggs and nestlings.n fall and winter, watch for the daily movement of robins to and from a roost after sunset and before sunrise. Robins generally remain in flocks through the winter, and the breakup of these flocks in spring signals the start of their breeding season.