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Taking care of Birds: Unwanted species scaring away a less common one from a birdhouse

Near my house, I have set up a birdhouse, which has become home to a pair of Oriental Magpie Robins. They are not a common species in Delhi, India, and are generally shy of human interaction and avian ...
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99 views

Do camels pose an environmental threat to kangaroos?

Camels, once used for transport across the Australian outback, were set free, and are reproducing at an uncontrolled rate in the empty interior of Australia. Do the ecosystems of camels and ...
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58 views

Do invasive species survive in the long run?

If an invasive species preys on native species, spreads widely and becomes dominant, should it not become extinct soon enough because of a lack of food?
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Is there any documented case in which floating substances led to the introduction of a new species?

Floating substances in the marine or freshwater environment often carry hitch hiking organisms. It is argued that many species may use this dispersal vector to reach new habitats, however to my ...