Body size evolution is commonly associated with climate change. For example, birds and mammals have been found to decrease in size with anthropogenic global warming. Recent studies have inferred dist...

Tiny fossils hint at when birds began making their mind-blowing journey to the Arctic to breed

Tiny fossils hint at when birds began making their mind-blowing journey to the Arctic to breed

Tiny fossils hint at when birds began making their mind-blowing journey to the Arctic to breed

Tiny fossils hint at when birds began making their mind-blowing journey to the Arctic to breed

abstract: Two phylogenetic comparative methods, independent contrasts and generalized least squares models, can be used to determine the statistical relationship between two or more traits. We show th...

Phylogenetically informed predictions account for phylogenetic relationships among species while predicting unknown trait values. Here, the authors critically compare this approach with equations deri...

The evidence, published this week in the journal Science, was found in 73-million-year-old fossils discovered on Alaska’s North Slope.

Polar ecosystems are structured and enriched by birds, which nest there seasonally and serve as keystone ecosystem members. Despite the ecological importance of polar birds, the origins of high-latitu...

YouTube video by Royal Tyrrell Museum of Palaeontology

Tiny bone fragments from Alaska suggest birds started breeding and nesting in the Arctic 30 million years earlier than previously thought

Minuscule fossils from 73m years ago are oldest evidence yet for birds nesting in polar regions