Mike Moyle unloads his horse before sunrise as he and a dozen other cowboys helped in a bi-annual cattle roundup at the Bar B ranch near Albia, Iowa.  Calves were roped and seperated from the herd for vaccinations, branding and the placement of growth stimulant implants.  The male calves were also castrated.  Owner Catherine Bay runs the operation with a herd of over 2,000 cattle.
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