Table 2: Bait birds.

SpeciesMean mass (g)

DucklingAnas sp.27.61
Spotted sandpiperActitis macularius17.51
Downy woodpeckerPicoides pubescens25.71
Yellow-bellied flycatcherEmpidonax flaviventris12.51
FlycatcherEmpidonax sp.13.41
Black-capped chickadeePoecile atricapillus13.67
Blue-headed vireoVireo solitarius22.01
Red-eyed vireoVireo olivaceus18.91
Cedar waxwingBombycilla cedrorum35.02
Swainson’s thrushCatharus ustulatus35.82
Hermit thrushCatharus guttatus34.51
OvenbirdSeiurus aurocapilla20.94
Yellow-rumped warblerSetophaga coronata14.01
Savannah sparrowPasserculus sandwichensis25.81
White-throated sparrowZonotrichia albicollis24.62
Dark-eyed juncoJunco hyemalis22.68
Purple FinchCarpodacus purpureus29.618
White-winged crossbillLoxia leucoptera26.81
Common redpollAcanthis flammea21.41
Pine siskinSpinus pinus13.04
American goldfinchSpinus tristis13.56
Evening GrosbeakCoccothraustes vespertinus58.22
Finch sp.Carduelinae24.91
Unknown chick29.04