Related by context. Frequent words. (Click for all words.) 64 insecticide DDT 63 Methylmercury 62 pesticide DDT 61 harlequin ducks 61 organochlorine pesticides 61 overhunting 60 Domoic acid 59 migratory ducks 58 organochlorines 57 parasitic mites 57 seabird populations 57 rat poisons 57 migratory bird populations 57 reproductive toxicity 56 bioaccumulation 56 developmental abnormalities 56 elk bison 56 cone snails 56 dieldrin 56 Sea otters 55 Chlorpyrifos 55 dunlin 55 rampant poaching 55 sicken humans 55 PCBs polychlorinated biphenyls 55 mercury PCBs 55 sea lampreys 55 shortnose sturgeon 55 overharvest 55 protozoan parasite 54 insectivores 54 habitat degradation 54 salmonella infections 54 mottled ducks 54 endocrine disrupting chemicals 54 overfishing pollution 54 frogs salamanders 53 amphipods 53 shearwater 53 eiders 53 endocrine disruption 53 Prenatal exposure 53 Coral bleaching 53 honeybee populations 53 endemic species 53 double crested cormorant 53 endocrine disrupters 53 bluebills 53 polybrominated diphenyl ethers PBDEs 53 diazinon 53 triclocarban 53 flame retardant chemicals 53 foraging habitat 53 habitat fragmentation 53 Colony Collapse Disorder CCD 53 ruddy ducks 53 DDT 53 chytridiomycosis 53 ring necked ducks 52 amphibian populations 52 biting midges 52 Predation 52 gastropods 52 chlordane 52 bee populations 52 Darwin finches 52 toxic algae blooms 52 hormone disrupting 52 pesticide sprays 52 Trumpeter swans 52 Barn owls 52 wintering habitat 52 leatherback sea turtles 52 rainbow smelt 52 larval stages 52 voracious predators 52 toxicant 52 potent neurotoxin 52 whitebark pine trees 52 guillemots 52 song thrush 52 endocrine disrupting 52 Olive Ridleys 52 synthetic estrogen 52 polybrominated diphenyl ethers 52 freshwater crocodiles 51 Schistosomiasis 51 Extinctions 51 polychlorinated biphenyls PCBs 51 overharvesting 51 limb deformities 51 powerful neurotoxin 51 hawks eagles 51 moulting 51 toxicants 51 platypuses 51 snowy plovers 51 amphibians reptiles 51 Gypsy moth 51 ruminant animals 51 chytrid