Related by context. Frequent words. (Click for all words.) 60 amphibian populations 60 White Nose Syndrome 56 species 56 adelgids 55 adelgid 54 amphibian species 54 grassland birds 54 hibernating bats 54 bird species 53 frog species 52 avian species 52 insect populations 52 federally endangered 51 hemlock woolly adelgid 51 mountain pine beetles 51 Wolbachia 51 mammal species 50 Culex tarsalis 50 timber rattlesnake 50 chytrid fungus 50 Gypsy moths 50 invasive insect 50 fungal disease 50 black footed ferret 49 mammals 49 temperate forests 49 barred owls 49 pikas 49 bats 49 ehrlichiosis 49 beetle 48 snowshoe hare 48 honeybee colonies 48 arthropod 48 Sage grouse 48 varroa mite 48 snowshoe hares 48 Nipah virus 48 vertebrate species 48 barred owl 48 wolverines 48 amphibians 48 eared bat 48 subspecies 48 nose syndrome 48 deer ticks 48 soybean aphid 48 petrel 47 insect 47 Yellowstone ecosystem 47 Phytophthora 47 grackle 47 overwintering 47 fungus 47 varroa mites 47 megafauna 47 ant species 47 insects 47 greater sage grouse 47 temperate zones 47 bee populations 46 beetles 46 tiger mosquito 46 tyrannosaur 46 mountain caribou 46 damselflies 46 cottontails 46 bollworms 46 habitat fragmentation 46 Emerald ash borer 46 mammal 46 pika 46 milder winters 46 overhunting 46 breeding colonies 46 genetic variability 46 lapwing 46 red cockaded woodpecker 45 goshawk 45 cottontail 45 dieback 45 Infestations 45 hemlock trees 45 Peregrine falcons 45 marten 45 petrels 45 babesiosis 45 whitebark pine 45 terrestrial ecosystems 45 woodland caribou 45 breeding pairs 45 toothed whales 45 ptarmigan 45 anaplasmosis 45 subpopulations 45 populations 45 Critically Endangered 45 gypsy moth 45 melanogaster 45 grebe 45 flycatcher