A female cactus bee (Diadasia rinconis) emerged from its little, cylindrical nest in the ground on a warm spring morning in South Texas, rising like ash from a chimney. Hundreds of patrolling males mobbed her almost instantaneously, their tawny bodies forming a buzzing, churning "mating ball" as they competed for a chance to copulate with her. The ball of bees faded after … [Read more...] about A Rare Moment Captured Up Close. Cactus Bees Swarmed In Tight Balls “Bee Balling”