A conveyor system includes: a pick conveyor defining a picking area for a bulk flow of parcels; a place conveyor positioned downstream of the picking area; a first robot singulator and a second robot singulator, which work in parallel to transfer parcels within a picking area of the pick conveyor to the place conveyor; and a vision and control subsystem that communicates instructions to control operation of some or all of the foregoing components. The vision and control subsystem includes a target camera for acquiring one or more images of the picking area, which are processed within the system to determine the location of parcels positioned within the picking area. The vision and control subsystem can execute one or more routines or subroutines to reduce system downtime associated with image acquisition and processing, parcel transfer to the place conveyor, and/or parcel delivery to the picking area.