Osprey

This bird of prey is commonly observed along the coast, on the margins of rivers, and on offshore islands.
Despite a similar appearance, it's only distantly related to the eagles, hawks and kites.
Its diet consist almost exclusively of fish, which is grasps with its talons from the water during flight.
Ospreys possess a number of unique adaptations, including a closable nostril, a riversible outer toe, and spines  under the foot.
They build large stick nests high on rocky headlands, in trees, or on electricity transmission towers.

Photos taken, 1,2, Point Heathcote reserve. Perth W.A.