He keeps them moist and when they are ready to hatch, he visits a pond or ditch and releases the tadpoles.
hiː kˈiːps ðˌɛm mˈɔɪst ænd wɛn ðeɪ ɑːɹ ɹˈɛdi tə hˈætʃ, hiː vˈɪzɪts ɐ pˈɑːnd ɔːɹ dˈɪtʃ ænd ɹᵻlˈiːsᵻz ðə tˈædpoʊlz.