During secondary succession, how do seeds get to the island?

Secondary succession, type of ecological succession (the evolution of a biological community's ecological structure) in which plants and animals recolonize a habitat after a major disturbance—such as a devastating flood, wildfire, landslide, lava flow, or human activity. significantly alters an area but has not rendered it completely lifeless. Secondary succession is distinguished from primary succession, in which a biological community develops where no life had existed previously. Secondary succession takes place where a disturbance did not eliminate all life and nutrients from the environment. So forth preserving the remaining seeds and being delivered by birds

February 1848 is when it was added. if that's what you were asking