Male bowerbirds hope to dazzle females with bright human-made items
Summary
Scientists studied how male great bowerbirds in Australia use human-made colorful items to decorate their mating bowers. They found that urban male bowerbirds use more and different human-made decorations than rural males, likely because these items are easier to find in cities. Both groups prefer human-made items when given a choice, showing how urban life changes bird behavior.Key Facts
- Male great bowerbirds build tunnels called bowers and decorate them to attract females.
- Researchers studied 61 male bowerbirds in urban (Townsville City) and rural (Dreghorn Cattle Station) areas in northern Queensland during September–December 2023.
- Urban bowers had about 90 decorations on average; rural bowers had about 20.
- Urban birds preferred green glass and red wire; rural birds used green glass and natural items like leaves and seeds.
- Some urban bowers included unusual items like handcuffs and mouth guards, reflecting nearby human locations.
- Human-made items were over 10 times more common in urban bowers than rural ones.
- When given a mixed pile of urban and rural decorations, both urban and rural males mostly chose human-made items.
- The availability of shiny, colorful human items in cities may help urban males create more attractive displays with less effort.
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