Stream Count Entities

public static void main(String[] args) {
        List<String> birds = Arrays.asList("peacock","dove","sparrow","crane","dove","crane","peacock");
        Map<String, Long> counts = birds.stream().collect(
                Collectors.groupingBy(
                        Function.identity(),
                        Collectors.counting()
                ));
        System.out.println(counts);
    }
Output
{crane=2, dove=2, peacock=2, sparrow=1}