How do I write out the code for this in R studio?

Using the Hawks dataset, provide a description of the missing data. Choose the following variables to focus on for this question $($ignore the others$)$: "Year", "Species", "Age", "Sex", "Weight", "Culmen", "Hallux".

Provide a visualization as well as summary conclusions regarding

which variables have most often missing measurements,

which combinations have most often missing measurements, and

how many observations had measurements for each variable.