Bird species across North America are declining at a far more drastic rate than previously expected.

Ornithologists, Birdwatchers Uncover Staggering Magnitude of Bird Population Decline

Cornell Lab of Ornithology conservation scientist Dr. Ken Rosenberg led an international team of 12 scientists in an analysis of decades of data on bird population — and the conclusion is disturbing. In the last 50 years, one in four birds in North America has disappeared. Pesticide use and loss of habitat to farmland are some of the most significant contributors to the decline in bird populations, according to Rosenberg. Although scientists have known for a long time that certain bird species were threatened by human activities, this study reveals that these issues apply to birds of nearly all species. “Seeing this net loss of three million birds was shocking,” Rosenberg said.

Prof. Stephen Ceci, human development, and Prof. Kelly Zamudio, ecology and evolutionary biology.

2 Cornell Professors Selected Into the American Academy of Arts and Sciences

The American Academy of Arts and Sciences announced its 214 new members on April 17, an honor distinguishing leaders across disciplines. Members on the list include former First Lady Michelle Obama and author Jonathan Franzen, as well as two Cornellians — Prof. Stephen Ceci, human development, and Prof. Kelly Zamudio, ecology and evolutionary biology.

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Spotlight on NTRES 2100: Introductory Field Biology

The course does not follow the typical prelim and final schedule; instead, students have several species identification quizzes scattered throughout the course of the semester. For these exams, students often roam the Cornell Botanical Gardens, identifying different types of trees.