Jeff Whitworth, Kansas State University associate professor of entomology, said bumblebees are not headed for extinction. Bee declines have been attributed to a variety of factors, including parasites, pesticides and urbanization, as well as fungal, bacterial and viral diseases.
Source: Feedstuffs, January 27, 2017.
Whitworth predicted that bee populations will continue to experience cycles of increase and decrease because of fluctuations in agriculture prices and year-round temperatures.