Body mass of adult of numerous vertebrate species and newly hatched or born offspring.
data("Offspring")
A data.frame with 3971 rows, each for a different species
species
class (phylogenetic class)
group (phylogenetic group)
adult Mass of the adult (female) in grams.
hatchling Mass of the offspring, in grams. This applies as well to species where the offspring is born rather than hatched.