Given the adoption of RDS estimation by the World Health Organization (for estimating national rates of HIV and AIDS) and UNAIDS, and growing interest in using network techniques in determining overall size estimations of hidden populations, in this paper we propose a method of network-based capture-recapture popula-tion estimation that involves only a single sampling round (rather than the two rounds implied by standard capture-re- capture techniques) and which can be used to supplement RDS data collection or more conventional venue based ap- proaches