Complex sentence: Bird species include the great grey owl and northern goshawk, and also the peregrine falcon and bald eagle, both of which have been removed (August 2007 and August 1999, respectively) from the federal threatened/endangered species list.
Split into simpler sentences: Bird species include the great grey owl and northern goshawk. Also the peregrine falcon and bald eagle, both of which have been removed (August 2007 and August 1999, respectively) from the federal threatened/endangered species list.