Related by context. Frequent words. (Click for all words.) 47 amphibian populations 47 salamanders 47 temperate zones 46 genetically distinct 46 feathered dinosaurs 46 primate evolution 45 chytrid fungus 45 mammalian species 45 frog species 45 breeding colonies 45 biologists 44 DNA barcoding 44 botanists 44 Sinervo 44 Beringia 44 Botanists 44 biodiversity hotspot 44 T. gondii 44 reproductive biology 44 species 44 ant species 44 vertebrate animals 43 herpetologists 43 continental drift 43 avian species 42 harbor porpoises 42 Infestations 42 Wadden Sea 42 migratory paths 42 interbreeding 42 Fossilized 42 researchers 42 indigenous cultures 42 scientists 42 population densities 42 adelgids 42 marine biologists 42 migratory habits 42 palaeontologists 41 biodiversity hotspots 41 Sea otters 41 palaeontology 41 northward migration 41 radiocarbon dated 41 Entomologists 41 Gypsy moths 41 Anthropologists 41 Herbarium 41 mammal species 41 Biologists 41 bioprospecting 41 platypuses 41 marine invertebrates 41 gobies 41 genetic variability 41 avian influenza viruses 41 pupfish 41 entomologists 41 Africanized honeybees 41 ecologists 40 convergent evolution 40 taxonomists 40 warmer winters 40 H. erectus 40 amphibians 40 placental mammals 40 reproduce asexually 40 bee populations 40 southward migration 40 Ecology Letters 40 ornithologists 40 pronghorns 40 northern climes 40 Ecologists 40 Ornithologists 40 jumbo squid 40 Olmecs 40 wintering grounds 40 Migrating birds 40 amphibian species 40 fossilized bones 40 sparsely inhabited 40 tropical climates 40 damselflies 39 genetically diverse 39 wintering birds 39 bog turtles 39 Geneticists 39 mycobacteria 39 vertebrate species 39 Palaeontology 39 Bt crops 39 Poinar 39 interbred 39 Toxoplasma 39 geneticists 39 flyways 39 zoologists 39 unicellular 39 genetic diversity 39 anthropologists