  Random walk on $\mathbb{N}$ with negative drift and absorption at 0, when
conditioned on survival, has uncountably many invariant measures
(quasi-stationary distributions, qsd) $\nu_c$. We study a Fleming-Viot(FV)
particle system driven by this process and show that mean normalized densities
of the FV unique stationary measure converge to the minimal qsd, $\nu_0$, as $N
\to \infty$. Furthermore, every other qsd of the random walk ($\nu_c$, $c>0$)
corresponds to a metastable state of the FV particle system.
