Changes

Sulphur-crested Cockatoos in the wild in urban areas have become a nuisance, as they use their strong beak to destroy timber decking and panelling on houses.

Sulphur-crested Cockatoos in the wild in urban areas have become a nuisance, as they use their strong beak to destroy timber decking and panelling on houses.

In rural areas, they are a pest for farmers of grain, fruit, and nut crops and in Western Australia are a declared pest.<ref name="DofA">Dept. of Agriculture</ref>,

In rural areas, they are a pest for farmers of grain, fruit, and nut crops and in Western Australia are a declared pest.,<ref name="DofA">Dept. of Agriculture</ref>  

They also emit a loud screeching sound, which has been described as like someone being strangled.<ref name="David">David</ref>

They also emit a loud screeching sound, which has been described as like someone being strangled.<ref name="David">David</ref>

They have been observed in flocks of up to 100 birds.<ref name="DofA" />

They have been observed in flocks of up to 100 birds.<ref name="DofA" />

Sulphur-crested Cockatoos are popular [[pet]]s, can live for 100 years in captivity<ref name="DofA" />, and will often bond with one person.<ref name="David" />

Sulphur-crested Cockatoos are popular [[pet]]s, can live for 100 years in captivity,<ref name="DofA" /> and will often bond with one person.<ref name="David" />

== Sources ==

== Sources ==