div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-coloration-of-birds-eggshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Coloration of Birds Eggs loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentssitereader030viewer2022020522575067a81a28ab0f07ac8e5dhtml5thumbnails1jpg width=140 height=200 divp© 1908 Nature Publishing Grouppdiv