TOEFL Listening: ETS-TOEFL听力机经 - 81KFV4RTU534JEY1P$

What two unexpected results of the study does the professor mention? A. Birds' nests were more commonly found in mountains than in plains. B. Hairs from deer and wild sheep were found in many nests. C. Some nests contained hairs from animals not normally found in the area. D. Only a few nests in a developed area contained hairs from domestic animals.