Loon Pied-billed / Joe Hammond / Ruddy Duck Ring / Paul Gardner / Dan Sanders / Song Sparrow Lincoln / Rosy-Finch Pine Grosbeak / Greg Miller / Virginia Rail Sora / Calliope Hummingbird Rufous / Robin Gray Catbird / Phoebe Vermilion Flycatcher / Loon Western Grebe / Bill Whan / Raven Violet-green / Carolina Parakeet / Ani Groove-billed / Ruddy Turnstone Sanderling / Merlin Peregrine / Loon Red-necked / /
This checklist is arranged in three sections, each corresponding to a pair of difficulty codes. The six codes are based primarily on the collective experience of Greg Miller and Dan Sanders. Overall abundance and ease of