Is this an answer where you are supposed to give your opinion? It sounds this way to me. In my opinion, political parties usually hinder the legislative work of Congress more than help it because bills being passed and things being done get hung up in the red tape of political discourse and Congressmen and women voting just based on whatever party they are in and not based on what they actually believe in and what will be best for the country.
Answer: Drags back the adaptation process
Explanation: These new arrivals delays or holds back the adaptation process of the population. The newly arrived birds are still fresh in terms of traits and behaviors from their home island, they will take a long time to adapt to new behaviors as well as develop the predominant traits, there by taking the whole process of adaptation of the general population backward.
Through art, science, mathematics
Mind reading is based on assumptions