More than 300 white pelicans, 23 endangered wood storks, 50 other fish-eating birds (great blue herons, cormorants, ring-billed gulls, common egrets), and three bald eagles have died near the lake northwest of Orlando.
Okocha, the current BBC African Footballer of the Year, is expected to lead the Super Eagles at the three-nation Unity Cup tournament in London, which starts on 29 May.