Science ❯ Ecology ❯ Population Dynamics

Species Decline

Urban Wildlife Historical Data Marine Species Conservation Measures Tropical Ecosystems Blue-winged Teal Population Chinook Salmon Monarch Butterfly Population Reindeer Conservation Strategies Butterflies Winter Birds Bumblebees Rebhuhn Endangered Species Tropical Birds Greater Sage Grouse Conservation Efforts Monarch Butterfly Western Monarchs African Penguin Population Conservation Biology Research Findings

Western Monarch Count Finds 12,260 Butterflies, Third-Lowest on Record

Federal assessments warn of extreme extinction risk for the western population by 2080.

Study Finds Sardine Crash Drove Mass Starvation of African Penguins During Moult