Relier Pairs Vocabulary Definition 1Version en ligne .................. par Tea Cher 1 Endangered 2 Decades 3 Pattern 4 Flutter 5 Migrations 6 Flight 7 Factor 8 Picky eaters 9 Individual 10 Generations The average span of time between the birth of parents and that of their offspring A period of ten years At risk of disappearing or becoming extinct The ability to fly The regular movement of animals from one place to another, especially in search of food or a better climate A single person or thing Something that contributes to an effect or result A regular or repeated way in which something happens or is done To move quickly and lightly from side to side or up and down Creatures who are selective about what they eat