New evidence for California Condors' genetic bottleneck

The existing genetic diversity of California Condors, all of which are descended from just 14 individuals, is strikingly low. But were condors more genetically diverse before their 20th century population crash, or were they ...

Beyond milkweed: Monarchs face habitat, nectar threats

In the face of scientific dogma that faults the population decline of monarch butterflies on a lack of milkweed, herbicides and genetically modified crops, a new Cornell University study casts wider blame: sparse autumnal ...

Monarch butterflies drop, migration may disappear (Update)

The stunning and little-understood annual migration of millions of Monarch butterflies to spend the winter in Mexico is in danger of disappearing, experts said Wednesday, after numbers dropped to their lowest level since ...

Genome offers clues to amphibian-killing fungus

A fungus that has decimated amphibians globally is much older than previously thought, but may have recently spread through the global wildlife trade to new locations where amphibians have no immunity, reports a new study.

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