dˈuː tə ðɛɹ hˈaɪ æksˌɛsəbˈɪlᵻɾi, ðeɪ hɐvbɪn wˈɛl stˈʌdid fɚɹə lˈɔŋ tˈaɪm ænd ðɛɹ spˈiːsiːz ɑːɹ wˈɛl nˈoʊn.
Due to their high accessibility, they have been well studied for a long time and their species are well known.