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Daniel Klem Jr.

From Observatory

Daniel Klem.jpg
Daniel Klem.jpg
Daniel Klem Jr.
Author. Scientist

Daniel Klem Jr. is the Sarkis Acopian Professor of Ornithology and Conservation Biology and director of the Acopian Center for Ornithology at Muhlenberg College.

Latest by this author


Daniel Klem Jr. is the Sarkis Acopian Professor of Ornithology and Conservation Biology and director of the Acopian Center for Ornithology at Muhlenberg College. A pioneering researcher in the field of bird/glass collisions, his new book, Solid Air, describes the challenges and solutions to preventing bird deaths.

Muhlenberg College | 2023

One of the first 20 projects in the world to pursue CORE green certification, the new Muhlenberg College campus building will provide over 20,000 square feet of academic and student programming space.

Muhlenberg Professor of Ornithology & Conservation Biology Dan Klem—the world’s foremost authority on bird collision and bird-safe glass—and Acopian Ornithological Specialist Peter Saenger, worked with the team at Re:Vision Architecture to ensure that the windows in the building will have bird-safe coatings.

CounterPunch | 2022

The history of window glass as a source of bird fatalities is ancient and progressive. The confirming obituaries, however, do not begin to appear in the literature until well after 1800, with the development of modern ornithology in Europe and North America. Thomas Nuttall published the first scientifically documented window fatality in his 1832 “A Manual of the Ornithology of the United States and of Canada.” He described how a hawk in pursuit of prey flew through two panes of greenhouse glass only to be stopped by a third. The next account was by Spencer F. Baird and his colleagues Thomas M. Brewer and Robert Ridgway in Volume 1 of their 1874 three-volume work “A History of North American Birds.” They described how a shrike struck the outside of a clear pane while attempting to reach a caged canary.

Publications by this author
Hancock House Publishers | October 2021

Birds behave as if sheet glass is invisible to them. They kill themselves striking clear and reflective panes in all types and sizes of human-built structures the world over. The killing is indiscriminate, taking the fit and unfit species, of any age category- both common and of conservation concern. Window-kills occur in the billions worldwide annually. The victims are always unintended, unnecessary, harmless, and have no voice or other means to protect themselves.

The science documenting this significant scale of loss has been known for decades, but only recently have meaningful efforts to address the problem occurred. Here, Dr. Daniel Klem Jr., describes and summarizes the challenges and solutions to this important conservation issue for birds and people that can be used by, among others, architects and developers, legislators, legal professionals, urban planners, and homeowners alike.

Unlike the complexities of other environmental challenges, such as climate change, this important conservation issue for birds and people can be solved, and the means to do so are described within the pages of this work to guide this worthy effort.

The author's 44 years of scientific research have revealed answers to create proven bird-safe products for sale. This book ultimately tries to make the case that such a commitment is worthwhile and needed.

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