Related by context. Frequent words. (Click for all words.) 52 agaves 51 loosestrife 50 lorikeets 50 lowland gorillas 49 goshawks 49 Gypsy moths 49 squirrels 49 columbines 49 insecticide DDT 49 purple coneflower 49 lupines 48 tent caterpillars 48 woodchucks 48 mole rats 48 beech trees 48 bobolinks 48 redpolls 48 Invasive plants 47 seedheads 47 cassowary 47 locust trees 47 mallard ducks 47 birds 47 oxalis 47 Florida panthers 47 black footed ferrets 47 chestnut blight 46 wolf pups 46 grackle 46 animals 46 aspen stands 46 species 46 Norway maples 46 Phragmites 46 Salamanders 46 Bald eagle 46 marsupials 45 Whooping cranes 45 flea beetles 45 voles 45 oleanders 45 garter snakes 45 nocturnal creatures 45 superweeds 45 peregrine 45 Asiatic lions 45 adelgids 45 lupine 45 Bubonic Plague 45 mammal 45 Bighorn sheep 45 thylacine 45 rodents 45 overhunting 45 flowering shrub 45 Peregrine falcons 44 peregrines 44 multiflora rose 44 butterfly bushes 44 California condors 44 platypuses 44 squirrel 44 orchid species 44 jackdaws 44 piñon 44 trilliums 44 Feral cats 44 Sandhill cranes 44 silver maples 44 mountain pine beetles 44 beech tree 44 trees 44 wild turkeys 44 longleaf pines 44 bollworms 44 cygnet 44 ibises 44 barn owls 44 elms 44 wildflowers 44 pygmy rabbits 44 insects 44 oak trees 44 beetles 44 egret 44 cottonwood trees 44 lynxes 44 grasses 44 Newts 43 Sumatran orangutans 43 White Nose Syndrome 43 chestnut trees 43 aspen trees 43 elm trees 43 feathered dinosaurs 43 Stink bugs 43 bee populations 43 pronghorns 43 ferns 43 owlets 43 foxes