Simplify the following text for a Grade 6 native English-speaking person.
Original: The OED notes that the word alcatraz was originally applied to the frigatebird ; the modification to albatross was perhaps influenced by Latin albus , meaning `` white '' , in contrast to frigatebirds which are black .
Simplified: The OED explains that the word alcatraz was at first supposed to be used for the frigatebird . But perhaps the change of the word to albatross was because of the Latin word albus .