For wildlife, springtime is usually when family life begins. The hard winter is nearly gone, spring’s warmth is moving in, and the hope of a summer plentiful with food is ahead; so it is with the Great Blue Herons. Large numbers of herons annually nest together at their rookery in Cuyahoga Falls, at the edge of the Cuyahoga Valley National Park. The big wading birds build nests of twigs and some surprisingly large branches, pair off, and raise their young. On Sunday, the herons were mostly quiet, little mating, nest building, or flying, and no vocalization at all. The sky was milky white with cirrus — not the best conditions for bird photography. Still, a silhouette can tell a story of the ancient rite of spring,