sources, do not explicitly follow this
protocol; however, subsets of the data can be extracted to produce data
suitable for hierarchical modeling. This function extracts a subset of
observation data that have a desired number of repeat visits within a period
of closure."><meta property="og:image" content="https://cornelllabofornithology.github.io/auk/logo.png"><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxx