This study was carried out in Elazığ and its surrounding areas between 1996-1997. Among the ticks collected between March-August, those with Rhipicephalus bursa were detected and examined for their developments in vitro condition. The maintenance and all development stages seen during the evolution period of R. bursa were followed in an oven set to 26ºC with a humidite rate of 85-90 %. In this environment, it has been determined the preoviposition periods of R. bursa as 3-10 days, oviposition period as 6-13 days, egg hatching time (incubation period) as 20-23 days, coming up time of the hatched egg as 7 days, larva’s survival period as 210 days, skin change period of the saturated nymph as 6-8 and the survival periods of the starved imago following the shin change as 90-120 days. The nourishment phases of the tick lasted on a lamb and rabbit in June. The larva inserted into the rabbit ear were observed to start blood sucking within 2-3 days, complete larva and nymph phases between 17-25 days ticks and leave the host afterward. The starved imagos, allowed nourishment in the lamb’s ear, were found to become saturated and leave the host within 8-10 days.