illustration of <i>Pandion cristatus</i>
Henrik Grönvold
1915–16
Mathews, Gregory M. <i>The birds of Australia</i> vol 5, extracted from <a rel="nofollow" class="external free" href="https://archive.org/download/birdsaustralia6math">https://archive.org/download/birdsaustralia6math</a> via BHL