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Related Experiment Video

Updated: Apr 11, 2026

Who is Who? Non-invasive Methods to Individually Sex and Mark Altricial Chicks

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Evolution: a genomic guide to bird population history.

David P L Toews¹

¹Fuller Evolutionary Biology Program, Cornell Lab of Ornithology, Cornell University, 159 Sapsucker Woods Road, Ithaca, NY 14950, USA.

Current Biology : CB

|June 3, 2015

Summary

Species show varied population changes in response to past climate shifts. Genomic analysis of 38 bird species reveals patterns linked to global environmental changes over millions of years.

Area of Science:

Evolutionary biology
Paleoclimatology
Genomics

Background:

Understanding species' historical responses to climate change is crucial for predicting future biodiversity.
Past climatic oscillations have significantly impacted species' distributions and population dynamics.

Purpose of the Study:

To investigate how bird populations have responded to climatic oscillations over the past few million years.
To identify patterns of population growth and decline in relation to global environmental change.

Main Methods:

Genomic analysis of 38 diverse bird species.
Population genetics approaches to infer historical demographic changes.
Correlation analysis with paleoclimate data.

Main Results:

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Variable patterns of population growth and decline were observed across the studied bird species.
These demographic fluctuations broadly correlate with major global environmental changes.
The study highlights differential species-specific responses to past climate variability.

Conclusions:

Species exhibit diverse demographic strategies in response to long-term climatic oscillations.
Genomic data provides insights into the evolutionary resilience and vulnerability of species to environmental change.
These findings contribute to understanding the long-term impacts of climate on avian biodiversity.