Table 5. Selection ratios (w_i) at the home-range level, averaged over 16 mallards studied on southern Öland, Sweden, October – December 2010, with respective 95% confidence interval (CI) lower and upper limits.

Habitat	wi	CI lower	CI upper
Ponds	143.82	−7.96	295.61
Alvar wetlands	29.99	12.57	47.41
Other wetlands	6.11	−2.91	15.13
Maize fields	2.95	1.54	4.36
Coast and sea	1.49	0.80	2.19
Coastal meadows	1.20	0.44	1.95
Alvar steppe	0.77	0.04	1.50
Pasture fields	0.34	0.15	0.54
Other crops	0.17	0.02	0.32
Other habitat	0.08	0.03	0.13

The table shows the selection ratios when considering the habitat as a ten-level factor (wet habitats are divided in subcategories). The habitats are ordered from the most (top) to the least preferred habitat (bottom).