Avian clutch size of increasing clutch size with increasing latitude. The proximate and ultimate causes for this pattern have been a subject of intense debate involving the ideas of group and individual selection. David Lack observed a direct relationship between latitude and avian clutch size. Birds near the equator laid approximately half as many eggs as those that resided in northern temperate habitats. He observed an increasing clutch-size from the equator towards the poles (something he referred to as the “latitude trend”) for many passerine (perching) birds, near-passerine (tree-dwelling) birds and in various other groups: Strigiformes, Falconiformes, Ciconiiformes, Laridae, Ralliformes, Galliformes, Podicipedifomes, and
Birds' Paradise had no choice but to fill the river with soil, and thus a small island was formed. Someone inserted a branch into the small island, and the branch sprouted and grew into a banyan tree in the next year. Many years later that banyan tree had spread and developed into a forest, which gradually covered the island. There are almost 40 species of birds inhabiting the forest in Birds' Paradise. Nycticorax nycticorax, Ardeola bacchus, Bubulcus ibis are the most common birds found on the island. In addition, there are also other species of birds like Ardea alba, Motacilla alba, oriental