Artificial trees capture new bird species on candid camera

AUGUST 23, 2019

by Jane Faure-Brac, Australian National University

An experiment from The Australian National University (ANU) using artificial trees has attracted birds and other wildlife never before seen in a damaged Canberra landscape—catching them on camera at the same time.

The experiment is a collaboration with the ACT Parks and Conservation Service and uses a series of power poles and translocated dead trees erected in landscape under regeneration.

The ANU researchers saw a four-fold increase in bird species on five recently erected power-poles. There was also a seven-fold increase in bird species across five re-purposed dead trees.

In a separate project on the same site, the birds were captured on motion-sensitive cameras hidden in the artificial structures, with the footage providing a public database for species activity.

Associate Professor Philip Gibbons from the ANU Fenner School of Environment and Society wanted to test whether artificial structures could be used to provide a home for birds and other wildlife when mature trees were cut down for residential and other development.

He says the artificial trees work better than he "could have ever hoped for."

"Even if we plant new trees elsewhere to replace those we knock down they take a century to mature and develop suitable habitats for birds and wildlife," Associate Professor Gibbons said.

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Birds from different species recognize each other and cooperate

Researchers from the University of Chicago and University of Nebraska show for the first time how birds from two different species recognize individuals and cooperate for mutual benefit.

UNIVERSITY OF CHICAGO MEDICAL CENTER

    

Cooperation among different species of birds is common. Some birds build their nests near those of larger, more aggressive species to deter predators, and flocks of mixed species forage for food and defend territories together in alliances that can last for years. In most cases, though, these partnerships are not between specific individuals of the other species--any bird from the other species will do.

But in a new study published in the journal Behavioral Ecology, scientists from the University of Chicago and University of Nebraska show how two different species of Australian fairy-wrens not only recognize individual birds from other species, but also form long-term partnerships that help them forage and defend their shared space as a group.

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How Birds of Different Feathers Flock Together

Mar. 7, 2013 — When different species of birds flock together, their flight formations are determined by social dynamics both between and within species.
New research from the Universities of Cambridge and Exeter reveals for the first time that, contrary to current models used to explain the movement of flocks, the differences between bird species and social relationships between individuals play a critical role in determining the dynamics of mixed-species flocks.

Circles indicate paired flight of jackdaws.
(Credit: Jolle Jolles)

The unified behaviour of bird flocks has puzzled scientists for hundreds of years. One naturalist from the turn of the century even suggested telepathy may be involved. There have since been more logical explanations, including mathematical models that show that repeated interactions among individuals following simple rules can generate coordinated group movements. However, these models usually rely on the assumption that individuals within groups are identical and interact independently, which may not reflect reality.

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