Table 1. Characteristics of the sites at which we studied house finches in Maricopa County, USA.
| Capture site | Phoenixdowntown | ASU campus | Mesa OrganicFarm | CrossroadsDistrict Park | Phoenix Zoo | South MountainPark | Estrella MountainPark |
| City | Phoenix | Tempe | Mesa | Gilbert | Phoenix | Tempe | Goodyear |
| Geographical coordinates | 33° 27′ N 112° 03′ W | 33° 25′ N111° 55′ W | 33° 27′ N111° 49′ W | 33° 19′ N111° 43′ W | 33° 27 ’N 111° 57′ W | 33° 21′ N112° 4′ W | 33° 25′ N112° 25′ W |
| Human population living within 1 km of study site | 7291 | 10385 | 4600 | 17175 | 50 | 1001 | 11 |
| Sample size * | 24 (18, 19, 20) | 36 (22, 36, 20) | 21 (20, 21, 18) | 29 (20, 27, 22) | 21 (18, 21, 21) | 22 (20, 22, 22) | 20 (20, 20, 20) |
| Habitats (% of land covered): | |||||||
| Cultivated Vegetation | 0.00 | 0.00 | 3.44 | 7.62 | 0.00 | 0.00 | 0.00 |
| Cultivated Grass | 0.00 | 0.00 | 0.00 | 1.45 | 8.05 | 0.05 | 1.11 |
| River Gravel | 0.00 | 0.00 | 0.00 | 1.53 | 1.14 | 0.00 | 19.00 |
| Vegetation | 1.01 | 2.25 | 6.37 | 3.32 | 3.16 | 4.12 | 3.62 |
| Disturbed (Commercial/Industrial) | 8.94 | 23.63 | 13.91 | 11.72 | 5.02 | 2.80 | 1.16 |
| Disturbed (Asphalt) | 21.17 | 24.75 | 8.60 | 9.59 | 13.62 | 5.05 | 1.71 |
| Undisturbed | 10.55 | 9.56 | 14.45 | 12.05 | 57.45 | 68.89 | 67.44 |
| Disturbed (Compacted Soil prior Agriculture) | 0.00 | 0.00 | 3.00 | 9.56 | 0.00 | 0.00 | 0.00 |
| Disturbed (Compacted Soil) | 0.78 | 1.01 | 1.50 | 2.44 | 1.99 | 1.81 | 0.67 |
| Disturbed (Mesic Residential) | 8.03 | 18.84 | 23.93 | 13.66 | 3.47 | 4.64 | 0.36 |
| Disturbed (Xeric Residential) | 49.52 | 19.95 | 24.79 | 26.62 | 5.54 | 12.62 | 1.37 |
| Water | 0.00 | 0.00 | 0.00 | 0.44 | 0.54 | 0.03 | 3.55 |
*
Number of birds trapped and studied for our measurements of coccidian parasites, avian pox, and oxidative damage respectively.