The chicks lay low and quite to avoid drawing unwanted attention. But when mom comes back with food they shoot up like a dart.

Aperture: 7.1	Shutter: 1/250
ISO: 800	Flash: Fired, On, Hi-speed Manual
FL: 400 mm	Lens: EF100-400mm f/4.5-5.6L IS USM
Distance: 5.46 m	Species: Blackbird, Red-winged