Urban Melbourne records more species on average but urban birders also spend longer looking. When checklist effort is accounted for, regional Victoria pulls clearly ahead.
A small group of adaptable species has become increasingly dominant across Melbourne’s suburbs. Common Mynas and Noisy Miners now appear on more than half of all urban checklists.
The urban impact is not random. Insect-eating and ground-feeding birds are systematically underrepresented in Melbourne compared to regional Victoria, pointing to deeper ecological damage than species counts alone reveal.
Regional Victoria experiences a clear surge in bird diversity each spring as migratory species arrive and breeding activity peaks. Melbourne’s suburbs show almost no seasonal variation, so the natural rhythm has been lost.
Not all of Melbourne is equally affected. Suburbs near parks, waterways, and the urban fringe retain higher diversity, but inner and outer suburban areas dominated by hard surfaces show the clearest signs of ecological thinning.