On a warm summer morning in Ieper, Belgium, 66-year-old Sylvain Cuvelier steps into his blooming garden with his 14-year-old granddaughter, hoping to identify and count all the fluttering butterflies.

In a groundbreaking new study, researchers at the University of Haifa have revealed that more than 700 million migratory insects traverse the skies of northern Israel each year, charting purposeful ...

Description based on v. 8 (1971), and v. 11 (1974). Title from cover. Published 19 -1973 for the research associates of Frederick A. and Norah Urquhart; 1974- have added title-page title: Annual ...

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