This juvenile Eastern Cottontail is a new addition to our front yard’s fauna. This rabbit is only a week or two out of the nest, and is still small enough to fit into the palm of your hand.
Wikipedia has this to say about the Eastern Cottontail:
Most nest holes are constructed in grasslands (including hayfields). The nest is concealed in grasses or weeds. Nests are also constructed in thickets, orchards, and scrubby woods. In southeastern Illinois tall-grass prairie, eastern cottontail nests were more common in undisturbed prairie grasses than in high-mowed or hayed plots. In Iowa most nests were within 70 yards (64.2 m) of brush cover in herbaceous vegetation at least 4 inches (10 cm) tall. Nests in hayfields were in vegetation less than 8 inches (20 cm) tall. Average depth of nest holes is 5 inches (12 cm), average width 5 inches (12.5 cm), and average length 7 inches (18 cm). The nest is lined with grass and fur.