Wildlife in Urban Heat Islands | Animal Welfare Hub

Urban heat island effects create additional thermal stress for wildlife in cities, with welfare implications that are growing with climate change.

Key Facts

Urban areas are 1-7 degrees Celsius warmer than surrounding rural areas
Heat stress affects urban wildlife including birds, small mammals, and insects
Dark impermeable surfaces and lack of vegetation amplify urban heat effects
Urban trees and green infrastructure can reduce heat island intensity by several degrees
Heat-stressed wildlife are more likely to seek water in unsafe locations, increasing conflict

Welfare Considerations

Urban heat islands create chronic thermal stress for wildlife that has not evolved for the extreme temperatures of developed areas. Birds nesting in urban environments may experience heat stress during extreme events that affects incubation, chick survival, and adult health. Small mammals active during urban afternoons may be physiologically stressed even when sufficient food is available. Urban greening — tree planting, green roofs, permeable surfaces — reduces heat island intensity and thereby improves welfare conditions for urban wildlife.

What You Can Do

Advocate for urban tree planting and green infrastructure in your municipality
Support cool corridor design in urban planning that reduces heat island effects
Provide water for wildlife in urban gardens during heat events
Donate to urban ecology research monitoring heat effects on urban wildlife
Engage with urban planning processes to include wildlife welfare in heat mitigation planning