Complex sentence: Bird was born in 1951 in Eugene, Oregon, but, since his father was a U.S. Foreign Service officer, he spent his childhood in Jerusalem, Beirut, Dhahran, Cairo and Bombay.
Split into simpler sentences: Bird was born in 1951 in Eugene, Oregon. His father was a U.S. Foreign Service officer, and he spent his childhood in Jerusalem, Beirut, Dhahran, Cairo and Bombay.