He got lots of birds, downy woodpeckers, northern cardinals, mourning doves, house sparrows and many others, and watching them was a learning experience.

他饲养过很多鸟，绒啄木鸟、北美主红、哀鸠、麻雀等等，并且把观察它们当成一种学习经历。

The growth of invasive species has added to a drop in the populations of local species like the house sparrow and the white-spectacled bulbul.

入侵物种数量的增长加剧了家麻雀和白眶鹎等本地物种数量的下降。