Migration

Less Light, More Trees Assist Migrating Birds

Scientists from the Cornell Lab of Ornithology and Colorado State University used observations from the Lab’s eBird citizen-science program to estimate the seasonal species richness of nocturnally migrating passerines within 333 well surveyed urban areas in the contiguous U.S. “Richness” is defined as the number of different species in an area.

Join Online Events to Celebrate Bird Migration

Day and night, across the country right now, a river of migrating birds is flowing overhead. The Cornell Lab of Ornithology holds its Migration Celebration to take note of this remarkable natural phenomenon. This year, Migration Celebration is taking place virtually with two weeks of special online events, including articles, activities, and live events.

New study on migration success reinforces need for monarch butterfly milkweed habitat

A recently published study presents evidence that the migration success of monarchs hasn’t declined in recent years and thus cannot explain the steep decline in the monarch population over the last few decades. The study drew on data collected on 1.4 million monarch butterflies that were tagged in the United States Midwest from 1998 to 2015 and emphasizes the need for new monarch habitat.

Climate change-influenced refugee crisis may lead to long-term settlement issues

While many models suggest that climate change will prompt a substantial number of people to leave their homes, not all research so clearly finds this is the case. Investigating cases where computer models seemed to indicate only limited impacts of climate change on people leaving rural areas, a team of researchers now suggest that the models may reveal a more nuanced circular migration pattern in areas stricken by climate change impacts.

Oyster Farming and Shorebirds Likely Can Coexist

Oyster farming as currently practiced along the Delaware Bayshore does not significantly impact four shorebirds, including the federally threatened red knot, which migrates thousands of miles from Chile annually, according to a Rutgers-led study. The findings, published in the journal Ecosphere, likely apply to other areas around the country including the West Coast and Gulf Coast, where oyster aquaculture is expanding, according to Rutgers experts who say the study can play a key role in identifying and resolving potential conflict between the oyster aquaculture industry and red knot conservation groups.

World Migratory Bird Day is May 9

Migratory birds are now flooding across the continent, as they return to their nesting grounds this spring. World Migratory Bird Day is on May 9, 2020, as people around the globe welcome birds back—and lend them a helping hand.

Birds Are Coming Through: Time to Switch Off the Lights

The biggest window of opportunity is opening up now to protect birds returning to the United States and Canada on their spring migrations. Analyses by scientists at the Cornell Lab of Ornithology and Colorado State University pinpoint key periods with the heaviest movements of birds in April and May. Turning off or reducing non-essential lighting at homes, businesses, and high-rise buildings will help protect hundreds of millions of birds migrating over brightly lit cities.

Join “Lights Out Texas” to Protect Migratory Birds

Lights Out Texas is a new two-year study now underway in Houston, Dallas, and Fort Worth. Along with local partners, researchers from the Cornell Lab of Ornithology and Colorado State University plan to test the best times to turn off lights at night in order to prevent harm to the hundreds of millions of birds migrating over these cities.

Launch of Think Global Health

The Council on Foreign Relations (CFR) introduces Think Global Health, a multi-contributor website that examines how changes in health are reshaping economies, societies, and the everyday lives of people around the world.

Ancient Rome: a 12,000-year history of genetic flux, migrations and diversity

Scholars have been all over Rome for hundreds of years, but it still holds some secrets – for instance, relatively little is known about where the city’s denizens actually came from. Now, an international team led by Researchers from the University of Vienna, Stanford University and Sapienza University of Rome, is filling in the gaps with a genetic history that shows just how much the Eternal City’s populace mirrored its sometimes tumultuous history.