Set clocks ahead one hour. Red-winged blackbirds establish territories in Cook's Meadow. Treefrog eggs hatch in ponds in meadows. Tadpoles are visible. Lunar rainbow may be visible at base of Lower Yosemite Fall.
Reptiles begin spring activity.
Gilbert skinks, western fence lizards and garter snakes can be spotted in sunny locations. Black bears end their winter sleep and leave their dens. Sows are accompanied by two or three cubs. Proper food storage is required year-round, but is especially critical at this time of year. Late April Conditions may be favorable for sequoia seed germination if seeds fall on bare mineral soil.