Science

Urbanization takes a bigger toll on bird diversity in the tropics than it does at other latitudes, study finds

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 14/10/2026, 22:40:24 UTC.

Briefings

A McGill University study published in October 2026 reveals that urbanization significantly reduces bird diversity in tropical regions compared to temperate zones, disrupting the natural latitudinal diversity gradient. The research indicates that while biodiversity typically increases toward the equator, human development in the tropics is eroding this pattern more severely than in other latitudes.

Key points

• Urbanization is weakening the latitudinal diversity gradient, causing bird diversity to decrease in tropical regions despite higher temperatures.
• The study, published in October 2026, found that tropical urban areas support fewer bird species than temperate urban areas, challenging the expectation that biodiversity should increase toward the equator.

Context and limitations

The evidence is limited to a single study from McGill University and does not account for other factors like habitat loss or climate change, nor does it represent long-term trends.

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