The three species of &quot;tree bats&quot; in Manitoba (from top to bottom): silver-haired bat (Lasionycteris noctivagans, MM 9972, 11.7 g, Portage La Prairie); eastern red bat (Lasiurus borealis, MM 17529, 9.5 g Pinawa); hoary bat (Lasiurus cinereus, MM 15008, 27.8 g, Tiger Hills). These species migrate south to avoid our winters.