Related by context. Frequent words. (Click for all words.) 66 ladybirds 64 ladybird 61 hemlock woolly adelgid 59 gray squirrels 57 tiger mosquito 57 wasp 56 basking sharks 56 Argentine ants 56 species 56 adelgid 56 lapwing 55 insect 55 round goby 55 gray squirrel 55 Didymo 55 snowdrop 55 beetle 55 Japanese knotweed 55 bumblebees 54 bee populations 54 amphibian populations 54 moth 54 wasps 54 bluebell 54 stoat 54 spotted knapweed 53 aphid 53 ragwort 53 damselflies 53 stink bug 53 beetles 53 Phytophthora 53 gypsy moth 53 avian species 53 stoats 53 knotweed 53 ant species 52 insects 52 invasive weed 52 vole 52 wildfowl 52 bittern 52 Hydrilla 52 voles 52 spp 52 invasive pest 52 Butterfly Conservation 51 giant hogweed 51 twitchers 51 blue tits 51 Cane toads 51 whiteflies 51 curlew 51 robin 51 varroa mite 51 pollinating insects 51 midge 51 whitefly 51 moths 51 aphids 51 basking shark 51 loosestrife 51 fungi 51 bird species 51 Aphids 51 newts 50 bluebells 50 protozoan 50 sea squirt 50 orchid species 50 mute swan 50 Birds RSPB 50 gypsy moths 50 mammal 50 chytrid fungus 50 Ornithologists 50 temperate regions 50 lady beetles 50 widow spider 50 weevil 50 dormice 50 snowdrops 50 bumblebee 50 cane toad 50 anemone 50 fungus 50 starling 50 dragonflies 50 Poison ivy 50 hawthorn 49 zebra mussel 49 Asian longhorned beetle 49 skunk cabbage 49 Biology Letters 49 mealybugs 49 honeybee population 49 Lionfish 49 parasitic wasps 49 Eurasian milfoil 49 spider mites 49 caterpillars