Remsen, J.V. 1975 Journal May 9 U.N.W. of Colorado, Boulder Co., Colo. Area: Boulder Creek at vicinity of small outdoor ice-skating rink Time: 1510-1630 Observer: Robert Andrews Temp: 60 Sky: overcast to p.c.; rain shower Wind: 0-5 W Species: Rock Dove 8 Chimney Swift 1 Com. Flicker 1 Downy Woodpecker 1 Dusky Flycatcher 5 Black-capped Chickadee 1 Black-billed Magpie 1 House Wren 5 Am. Robin 5 Swainson's Thrush 5 Veery 1 Com. Starling 5 Virginia's Warbler 2 Nashville Warbler 1 Audubon's Warbler 4 Yellow Warbler 1 House Finch 8 Pine Siskin 1 Am. Goldfinch 1 Rose-breasted Grosbeak 18 hybrid (?) Grosbeak 18 House Sparrow 5 Am. Dipper 1 Prewwit Res., Washington Co., Colo. Area: trees below the dam + reservoir Time: 1905-1940 Observers: Robert Andrews, Steve Larson Temp: 60 Sky: p.c. Wind: 0-10 W Species: Eared Grebe 3 W. Grebe 1 White Pelican 2 Gadwall 35 Blue-winged Teal 5 Am. Wigeon 15 Green-winged Teal 15 N. Pintail 5 N. Shoveler 10 Redhead 1 Ring-Com. Goldeneye 6 Lesser Scaup 10 Am. Coot 10 Com Snipe 2 Spotted Sandpiper 2 Am. Avocet 8 Wilson's Phalarope 100 Mourning Dove 10 Great Horned Owl 2 E. Kingbird 5 W. Kingbird 5 Dusky Flycatcher 1 Barn Swallow 10 Blue Jay 2 Black-capped Chickadee 1 House Wren 4 Brown Thrasher 4 Am. Robin 2 Com. Starling 10 Warbling Vireo 1 Orange-crowned Warbler 3 Yellow Warbler 3 Myrtle Warbler 1 Audubon's Warbler 2 Com. Yellowthroat 4 House Sparrow 2 W. Meadowlark 10 Yellow-headed Blackbird 100 Red-winged Blackbird 50 Com. Grackle 10 Orchard Oriole 2 Rose-breasted Grosbeak 18 Am. Goldfinch 1 Green-tailed Towhee 1 Lark Sparrow 2 White-crowned Sparrow 3 White-faced Ibis 10