div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=pollinators-monarch-help-track-monarch-migration-since-the-1970s-scientists-havehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: pollinators monarchHelp track monarch migration Since the 1970s scientists have used a technique called tagging to study monarchs migratory movements This is done by gently applying loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220423105ed75f48acc46829cb3402f6html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=pollinators-monarch-help-track-monarch-migration-since-the-1970s-scientists-havehtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: pollinators monarchHelp track monarch migration Since the 1970s scientists have used a technique called tagging to study monarchs migratory movements This is done by gently applying loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsusreader034viewer20220423105ed75f48acc46829cb3402f6html5thumbnails2jpg width=140 height=200 divdiv