The Relationship Between the Amount of Unsealed Brood in Honeybee Colonies and Their Pollen Collection

Abstract
Summary In 1968 and 1969 six experiments on groups of 6–9 colonies fitted with pollen traps showed that: (1) there was a significant correlation between the amount of unsealed brood and the amount of pollen collected during each experimental period; (2) queenless colonies without brood collected only small amounts of pollen; (3) colonies which had similar amounts of unsealed brood collected different amounts of pollen at different locations and in different months.