```r
starwars %>%
  filter(is.na(species))
```

```
## # A tibble: 5 x 13
##   name  height  mass hair_color skin_color eye_color birth_year gender
##   <chr>  <int> <dbl> <chr>      <chr>      <chr>          <dbl> <chr> 
## 1 Ric ~    183    NA brown      fair       blue              NA male  
## 2 Quar~    183    NA black      dark       brown             62 male  
## 3 R4-P~     96    NA none       silver, r~ red, blue         NA female
## 4 Sly ~    178    48 none       pale       white             NA female
## 5 Capt~     NA    NA unknown    unknown    unknown           NA female
## # ... with 5 more variables: homeworld <chr>, species <chr>, films <list>,
## #   vehicles <list>, starships <list>
```