Twin Lakes Open Space park near our place in north Boulder is home to a mating pair of Great Horned Owls. For the past five winters they have nested high in a splintered Cottonwood tree. The owlets emerge from the nest in spring. Thought I'd post a few pics from walks in the park taken at different times over the past two weeks using an E-M1 with 12-40 f2.8 and 40-150 f4-5.6R. One of the mating pair, high in a tree. This owl is a bit smaller than its partner. Two of the three owlets peering from the nest.