His data in History of Animals, Generation of Animals, Movement of Animals, and Parts of Animals are assembled from his own observations, statements given by people with specialized knowledge such as beekeepers and fishermen, and less accurate accounts provided by travellers from overseas.
hɪz dˈeɪɾə ɪn hˈɪstɚɹi ʌv ˈænɪməlz, dʒˌɛnɚɹˈeɪʃən ʌv ˈænɪməlz, mˈuːvmənt ʌv ˈænɪməlz, ænd pˈɑːɹts ʌv ˈænɪməlz ɑːɹ ɐsˈɛmbəld fɹʌm hɪz ˈoʊn ɑːbzɚvˈeɪʃənz, stˈeɪtmənts ɡˈɪvən baɪ pˈiːpəl wɪð spˈɛʃəlˌaɪzd nˈɑːlɪdʒ sˈʌtʃ ɐz bˈiːkiːpɚz ænd fˈɪʃɚmˌɛn, ænd lˈɛs ˈækjʊɹət ɐkˈaʊnts pɹəvˈaɪdᵻd baɪ tɹˈævɛlɚz fɹʌm ˌoʊvɚsˈiːz.