Science ❯ Ecology ❯ Population Dynamics

Species Decline

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

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