The distribution and activities of honey bees (Apis melliferaL.) foraging on alfalfa (Medicago sativaL.), safflower (Carthamnus tinctoriusL.), and yellow star thistle (Centaurea solstitialisL.) were determined by magnetically recovering 74.9% of 3200 tags applied to bees foraging in the fields. Common Italian stock was compared with “Hy-Queen” stock selected for alfalfa preference and high pollen collection.A significantly shorter foraging distance was detected for Hy-Queen stock to yellow star thistle but not to alfalfa or safflower. Mean foraging distances to the combined floral sources were 404 m for common Italian and 357 m for Hy-Queen stocks. Other foraging activities, including pollen collection, were similar for both stocks. The foraging activity and distance of alfalfa foragers gradually increased each day after colony relocation until observations ceased 7 days later.