div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=rdjzr2agvvkijm6n3b66365n-both-parents-share-incubation-duties-and-often-singhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: rdjzr2agvvkijm6n3b66365n-wpenginenetdna-sslcomBoth parents share incubation duties and often sing from the nest a behavior that probably allows cowbirds3 to home in more easily loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentssitereader034viewer20220505195fa280500d69506977233387html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=rdjzr2agvvkijm6n3b66365n-both-parents-share-incubation-duties-and-often-singhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: rdjzr2agvvkijm6n3b66365n-wpenginenetdna-sslcomBoth parents share incubation duties and often sing from the nest a behavior that probably allows cowbirds3 to home in more easily loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentssitereader034viewer20220505195fa280500d69506977233387html5thumbnails2jpg width=140 height=200 divdiv