We're not the only species that felt the unusually long and bitter winter. WNYC reporter Stephen Nessen, explains how rats were forced to eat trees. Asian tiger mosquitoes were also hit hard. And new kinds of birds are in the area. What signs of a long winter are you seeing in the city's natural world? Birders, which species are you seeing? Wildlife watchers and gardeners, what other signs of the polar vortex are you observing as spring begins?