(a) |
artificial structure: Includes active or abandoned human dwellings, bridges, gravel parking areas or roads, artificial nesting-sites, etc. You need not use this category for observations in the "Urban/Rural" habitat category, unless birds seem to be associating with a nest-site. Examples of appropriate uses include: a vulture nest in an abandoned shack surrounded by a low oldfield (SLHo(a)), a nighthawk nest on a flat rooftop (UUC(a)), a Tree Swallow pair at a nest-box on the edge of a lake (OLWl(a)). |
(c) | cliff/talus: Any exposed rock face or slope. For example, a phoebe nest found on a cliff in a hemlock woods is designated FUCh(c), a Herring Gull observed on a Lake Superior cliff would be OLWl(c), and a Winter Wren observed among tumbled boulders on the forested bluffsides of Devils Lake would be FUMp(c). |
(d) | dune: Elevated sand dunes with or without vegetation, primarily along the Lake Michigan shore (designated OLWl(d)), but not the immediate shoreline or beach, which are designated simply OLWl. |
(e) | edge: Woods edge, i.e., found at the very edge of, or less than 30 feet into, a woods. For example, FUHm(e) designates the edge of an upland maple woods. |
(g) | grazed: Any habitat known to be actively grazed. Not necessary for the "Open pasture" habitat types (OUAp, OLAp). A common example is a pasture with greater than 25% cover of trees or shrubs (e.g., SUMo(g), SLHo(g)). |
(i) | island: Islands (less than 100 acres in size) in lakes, rivers, or marshes (designated OLWl(i), OLWr(i), OLWm(i)), regardless of the vegetation. Some substrate must be exposed (i.e., do not include "islands" of emergent vegetation). Includes both natural and artificial (e.g., dredge-spoil) islands. Does not include forested islands in forested riverbottoms (in these cases, use simply, e.g., FLHs). |
(w) | water: Ponds or streams not large enough to be included in the OLW category. For example, a Spotted Sandpiper family found in a small stream in a shrub swamp would be designated SLHn(w); a Northern Waterthrush nest found among tree roots surrounded by standing water in an ash-cedar swamp would be FLMc(w). |