 pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Filter observations to repeat visits for hierarchical modeling — filter_repeat_visits"><meta property="og:description" content="Hierarchical modeling of abundance and occurrence requires repeat visits to
sites to estimate detectability. These visits should be all be within a
period of closure, i.e. when the population can be assumed to be closed.
eBird data, and many other data 