  We characterize finite, connected posets $P$ having a crown as retract. We
define a multigraph $\mathfrak{F}(P)$ whose vertices are the so-called improper
4-crowns contained in the extremal points of $P$, and we show that $P$ contains
a 4-crown as retract iff there exists a graph homomorphism of a certain type
from $\mathfrak{F}(P)$ to a multigraph $\mathfrak{C}$ not depending on $P$.
Additionally we show that $P$ contains a retract-crown with $n \geq 6$ points
iff the poset induced by the extremal points of $P$ contains a retract-crown
with $n$ points.
