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Migrating Parrots – Two Long-Distance Travelers from Australia

Swift ParrotRight now, as autumn progresses in the north and spring arrives in the south, billions of birds embark on epic migrations that take them to breeding and wintering grounds.  The journeys of many species, such as the pole-to-pole trip of the Arctic Tern, are well-known to bird enthusiasts.  We don’t often think of parrots as migrants, yet many do undertake very impressive seasonal trips.  Today I’ll highlight 2 little-known migratory rarities, the Swift Parrot (Lathamus discolor) and the Orange-Bellied Grass Parakeet (Neophema chrysogaster).

Perilous Travels

The journeys of Australia’s only migratory parrots do not approach in length those of many other birds, but they are fraught with danger for other reasons.  Both species are rare, and rely upon disappearing habitats and very unique foods; like all migrants, protection is needed at both their Australian winter and Tasmanian summer ranges, and along their migration routes.  Read More »

Decision-Making in Bird Flocks – Some Individuals Lead, but All Have a Vote

StarlingsWho hasn’t marveled at the way bird flocks seem to move as a single organism? Groups ranging in size from a dozen Zebra Finches to millions of Budgerigars change direction with astonishing fluidity and speed, confusing predators and leaving observers to wonder just  how they mange to accomplish such feats.

Flexible Leadership

While birding in deserts, grasslands and other open habitats that allowed long, clear views of large flocks, I’ve tried, unsuccessfully, to determine if it was a single leader “calling the shots” or some sort of unobservable group dynamics at work.

Recently, researchers at Oxford and Eotvos Universities have provided part of the answer, at least where pigeons are concerned.  Research published in the April, 2010 edition of the journal Nature, establishes that pigeons use flexible hierarchy system to make group decisions (direction of travel, choice of feeding site, etc.).  Read More »

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