. | Reward rate . | Foraging activity . | Mass . | Non-foraging activity . | BMR or RMR . | Daily food intake . | DEE . |
---|---|---|---|---|---|---|---|
Starling | Variable | + | 0 | − | 0 | ||
Sturnus vulgaris1 | |||||||
Starling | Variable | + | − | − | + | + | |
Sturnus vulgaris2 | |||||||
Zebra finch | Variable | + | 0 | 0* | 0* | ||
Taeniopygia guttata3 | |||||||
Zebra finch | Variable | + | 0 | − | 0 | − | − |
Taeniopygia guttata (this study) | |||||||
Starling | Fixed | + | − | − | − | ||
Sturnus vulgaris1 | |||||||
Starling | Fixed | + | − | − | − | − | |
Sturnus vulgaris4 | |||||||
Zebra finch | Fixed | + | − | (−) | − | − | − |
Taeniopygia guttata5 | |||||||
Steely-vented hummingbird | Fixed | + | − | −** | − | − | |
Amazilia saucerottei6 | |||||||
Fork-tailed emerald | Fixed | + | − | −** | − | − | |
Chlorostilbon canivetii6 | |||||||
Domestic pigeon | Fixed | + | − | −*** | − | ||
Columba livia7 | |||||||
House mouse | Fixed | 0 | 0 | − | − | ||
Mus domesticus8 | |||||||
Deer mouse | Fixed | 0 | 0 | − | − | ||
Peromyscus maniculatus8 | |||||||
Siberian hamster | Fixed | + | − | − | |||
Phodopus sungorus9 |
. | Reward rate . | Foraging activity . | Mass . | Non-foraging activity . | BMR or RMR . | Daily food intake . | DEE . |
---|---|---|---|---|---|---|---|
Starling | Variable | + | 0 | − | 0 | ||
Sturnus vulgaris1 | |||||||
Starling | Variable | + | − | − | + | + | |
Sturnus vulgaris2 | |||||||
Zebra finch | Variable | + | 0 | 0* | 0* | ||
Taeniopygia guttata3 | |||||||
Zebra finch | Variable | + | 0 | − | 0 | − | − |
Taeniopygia guttata (this study) | |||||||
Starling | Fixed | + | − | − | − | ||
Sturnus vulgaris1 | |||||||
Starling | Fixed | + | − | − | − | − | |
Sturnus vulgaris4 | |||||||
Zebra finch | Fixed | + | − | (−) | − | − | − |
Taeniopygia guttata5 | |||||||
Steely-vented hummingbird | Fixed | + | − | −** | − | − | |
Amazilia saucerottei6 | |||||||
Fork-tailed emerald | Fixed | + | − | −** | − | − | |
Chlorostilbon canivetii6 | |||||||
Domestic pigeon | Fixed | + | − | −*** | − | ||
Columba livia7 | |||||||
House mouse | Fixed | 0 | 0 | − | − | ||
Mus domesticus8 | |||||||
Deer mouse | Fixed | 0 | 0 | − | − | ||
Peromyscus maniculatus8 | |||||||
Siberian hamster | Fixed | + | − | − | |||
Phodopus sungorus9 |
The responses to a decrease in foraging reward rate are shown. Reward rates could either be fixed (without variation) or variable (only mean fixed). +,increases; −, decreases; 0, no change; indicators in parentheses refer to trends (P<0.1).
*But note the quantitative agreement with our result of a negative effect in Fig. 2; **perching MR (not directly measured); ***inferred from body temperature.
1Fotheringham(1998), 2Wiersma et al. (2005), 3Lemon and Barth (1992), 4Bautista et al.(1998), 5Deerenberg et al. (1998), 6Tiebout (1991), 7Rashotte and Henderson(1988), 8Perrigo(1987), 9Day and Bartness (2001).