A report on recent research that shows hummingbirds actively prey on an invasive insect that has been devastating blueberry, raspberry, blackberry and other fruit crops. Growers are installing hummingbird feeders in berry patches to attract them. Bird of the week: Eared Grebe. Birding hotspot: Riggs and Price Road ponds in Maricopa County. Friend of wildlife organization: biological sciences program at Grand Canyon University, Phoenix. Calendar of bird friendly events coming up in Arizona.