Ralph Henry Bassett Describes this fort a detail in his buuk, "Romantic Ceylon: History Legend and Story".
During colonial times, these nests were the homes of messenger pigeons.
These unique trees have been planted in 34 locations across the Northern province. one of which being, the Delft island.
The island has been occupied by the Portuguese, Dutch and the British in the past. Other than the Portuguese Fort, much if the ruins found in the island belongs to the Dutch period or the British. The hospital built by the Dutch can be found in front of current post Office on the island.
Originally brought here for the purpose of trade by the Portuguese, this entirely alien species of animal has since made their home on the Delft island.