Puerto Rican coqui frogs were accidentally introduced to Hawaii in the 1980s, and today there are as many as 91,000 frogs per hectare in some locations. What does that mean for native wildlife? Concerns that ravenous coquis ...
Ecology
Nov 29, 2017
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32
Birds use vocalizations to attract mates, defend territories, and recognize fellow members of their species. But while we know a lot about how variations in vocalizations play out between populations of songbirds, it's far ...
Plants & Animals
Nov 1, 2017
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210
Species translocation—capturing animals in one place and releasing them in another—is a widely used conservation method for establishing or reestablishing populations of threatened species. However, translocation projects ...
Ecology
Oct 25, 2017
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18
For conservation efforts to be effective, wildlife managers need to know how many individuals of a species are out there. When species are spread out over large areas and occur at low densities, as is the case with the Golden ...
Ecology
Oct 18, 2017
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47
Some birds regularly move to new territories between years, depending on factors including habitat quality and the presence of predators, but what about within a single breeding season? Grassland ecosystems are particularly ...
Plants & Animals
Oct 11, 2017
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8
Canada Geese have shifted their winter range northward in recent years by taking advantage of conditions in urban areas—but what specific features of cities make this possible? A new study from The Condor: Ornithological ...
Ecology
Oct 11, 2017
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30
Vocal communication is central to the lives of many birds, which use sound to attract mates and defend territories. Penguins are no exception, but we know little about how or why penguin vocalizations vary geographically ...
Plants & Animals
Sep 27, 2017
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2
Populations of many North American songbirds are declining, and in many cases we don't understand why—for example, whether the problem lies with reproductive success or in the survival rates of adults. Conservation efforts ...
Ecology
Sep 27, 2017
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5
In 2003, Northern California's Yurok Tribe initiated efforts to reintroduce California Condors on their lands. While wild condors have not existed in the region for more than a hundred years, a new study from The Condor: ...
Ecology
Sep 20, 2017
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2
Most birds lack genitalia, but male ducks are known for their long, spiraling penises, which have evolved through an ongoing cat-and-mouse game with females. A new study from The Auk: Ornithological Advances looks at whether ...
Plants & Animals
Sep 20, 2017
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15
