Table 2
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Length of stay (mean ± SD, range in parenthesis), change in fat and lean masses between initial and final capture and rate of mass change of individual Neotropical migrants recaptured >1 day after first capture in St. George Island, FL, during pre-breeding migration 2016–2018

SpeciesNMinimum stopover duration (days)Change in fat (g)Change in lean (g)Rate of fat change (g/d)Rate of lean change (g/d)
BLGR22.00 ± 1.41
(1.00–3.00)		0.88 ± 1.73
(–0.34—2.1)		1.62 ± 1.16
(0.80–2.45)		0.18 ± 0.74
(–0.34—0.70)		0.81 ± 0.01
(0.80–0.82)
HOWA11.00 ± NA
(1.00–1.00)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA
(−0.02 — −0.02)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA (−0.02—−0.02)
INBU51.20 ± 0.45
(1.00–2.00)		0.04 ± 0.2
(–0.19—0.26)		0.06 ± 0.91
(–1.40—0.88)		0.02 ± 0.17
(–0.19—0.24)		−0.01 ± 0.85
(–1.40—0.88)
NOWA21.00 ± 0.00
(1.00–1.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)
OVEN62.33 ± 1.03
(1.00–4.00)		−0.06 ± 0.26
(–0.51—0.20)		0.87 ± 0.68
(–0.08—1.74)		−0.02 ± 0.13
(–0.26—0.10)		0.48 ± 0.39
(–0.02—0.95)
REVI34.00 ± 3.46
(2.00–8.00)		0.62 ± 1.45
(–0.71—2.17)		0.75 ± 1.97
(–1.48—2.25)		0.04 ± 0.34
(–0.35—0.27)		0.09 ± 0.76
(–0.74—0.75)
SUTA42.50 ± 1.73
(1.00–5.00)		0.18 ± 0.19
(–0.04—0.40)		0.75 ± 1.17
(–0.28—2.41)		0.07 ± 0.07
(–0.02—0.12)		0.16 ± 0.33
(–0.28—0.48)
WOTH22.50 ± 2.12
(1.00–4.00)		0.96 ± 1.49
(–0.09—2.02)		2.81 ± 1.66
(1.64–3.98)		0.21 ± 0.42
(–0.09—0.51)		1.32 ± 0.45
(1.00–1.64)
SpeciesNMinimum stopover duration (days)Change in fat (g)Change in lean (g)Rate of fat change (g/d)Rate of lean change (g/d)
BLGR22.00 ± 1.41
(1.00–3.00)		0.88 ± 1.73
(–0.34—2.1)		1.62 ± 1.16
(0.80–2.45)		0.18 ± 0.74
(–0.34—0.70)		0.81 ± 0.01
(0.80–0.82)
HOWA11.00 ± NA
(1.00–1.00)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA
(−0.02 — −0.02)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA (−0.02—−0.02)
INBU51.20 ± 0.45
(1.00–2.00)		0.04 ± 0.2
(–0.19—0.26)		0.06 ± 0.91
(–1.40—0.88)		0.02 ± 0.17
(–0.19—0.24)		−0.01 ± 0.85
(–1.40—0.88)
NOWA21.00 ± 0.00
(1.00–1.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)
OVEN62.33 ± 1.03
(1.00–4.00)		−0.06 ± 0.26
(–0.51—0.20)		0.87 ± 0.68
(–0.08—1.74)		−0.02 ± 0.13
(–0.26—0.10)		0.48 ± 0.39
(–0.02—0.95)
REVI34.00 ± 3.46
(2.00–8.00)		0.62 ± 1.45
(–0.71—2.17)		0.75 ± 1.97
(–1.48—2.25)		0.04 ± 0.34
(–0.35—0.27)		0.09 ± 0.76
(–0.74—0.75)
SUTA42.50 ± 1.73
(1.00–5.00)		0.18 ± 0.19
(–0.04—0.40)		0.75 ± 1.17
(–0.28—2.41)		0.07 ± 0.07
(–0.02—0.12)		0.16 ± 0.33
(–0.28—0.48)
WOTH22.50 ± 2.12
(1.00–4.00)		0.96 ± 1.49
(–0.09—2.02)		2.81 ± 1.66
(1.64–3.98)		0.21 ± 0.42
(–0.09—0.51)		1.32 ± 0.45
(1.00–1.64)

The rate of mass change (g/d) for each species obtained from individuals recaptured >1 day from initial capture (fat and lean mass measured by QMR in the field).

Table 2
Open in new tab

Length of stay (mean ± SD, range in parenthesis), change in fat and lean masses between initial and final capture and rate of mass change of individual Neotropical migrants recaptured >1 day after first capture in St. George Island, FL, during pre-breeding migration 2016–2018

SpeciesNMinimum stopover duration (days)Change in fat (g)Change in lean (g)Rate of fat change (g/d)Rate of lean change (g/d)
BLGR22.00 ± 1.41
(1.00–3.00)		0.88 ± 1.73
(–0.34—2.1)		1.62 ± 1.16
(0.80–2.45)		0.18 ± 0.74
(–0.34—0.70)		0.81 ± 0.01
(0.80–0.82)
HOWA11.00 ± NA
(1.00–1.00)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA
(−0.02 — −0.02)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA (−0.02—−0.02)
INBU51.20 ± 0.45
(1.00–2.00)		0.04 ± 0.2
(–0.19—0.26)		0.06 ± 0.91
(–1.40—0.88)		0.02 ± 0.17
(–0.19—0.24)		−0.01 ± 0.85
(–1.40—0.88)
NOWA21.00 ± 0.00
(1.00–1.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)
OVEN62.33 ± 1.03
(1.00–4.00)		−0.06 ± 0.26
(–0.51—0.20)		0.87 ± 0.68
(–0.08—1.74)		−0.02 ± 0.13
(–0.26—0.10)		0.48 ± 0.39
(–0.02—0.95)
REVI34.00 ± 3.46
(2.00–8.00)		0.62 ± 1.45
(–0.71—2.17)		0.75 ± 1.97
(–1.48—2.25)		0.04 ± 0.34
(–0.35—0.27)		0.09 ± 0.76
(–0.74—0.75)
SUTA42.50 ± 1.73
(1.00–5.00)		0.18 ± 0.19
(–0.04—0.40)		0.75 ± 1.17
(–0.28—2.41)		0.07 ± 0.07
(–0.02—0.12)		0.16 ± 0.33
(–0.28—0.48)
WOTH22.50 ± 2.12
(1.00–4.00)		0.96 ± 1.49
(–0.09—2.02)		2.81 ± 1.66
(1.64–3.98)		0.21 ± 0.42
(–0.09—0.51)		1.32 ± 0.45
(1.00–1.64)
SpeciesNMinimum stopover duration (days)Change in fat (g)Change in lean (g)Rate of fat change (g/d)Rate of lean change (g/d)
BLGR22.00 ± 1.41
(1.00–3.00)		0.88 ± 1.73
(–0.34—2.1)		1.62 ± 1.16
(0.80–2.45)		0.18 ± 0.74
(–0.34—0.70)		0.81 ± 0.01
(0.80–0.82)
HOWA11.00 ± NA
(1.00–1.00)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA
(−0.02 — −0.02)		0.04 ± NA
(0.04–0.04)		−0.02 ± NA (−0.02—−0.02)
INBU51.20 ± 0.45
(1.00–2.00)		0.04 ± 0.2
(–0.19—0.26)		0.06 ± 0.91
(–1.40—0.88)		0.02 ± 0.17
(–0.19—0.24)		−0.01 ± 0.85
(–1.40—0.88)
NOWA21.00 ± 0.00
(1.00–1.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)		−0.04 ± 0.08
(–0.10—0.02)		2.29 ± 1.01
(1.58–3.00)
OVEN62.33 ± 1.03
(1.00–4.00)		−0.06 ± 0.26
(–0.51—0.20)		0.87 ± 0.68
(–0.08—1.74)		−0.02 ± 0.13
(–0.26—0.10)		0.48 ± 0.39
(–0.02—0.95)
REVI34.00 ± 3.46
(2.00–8.00)		0.62 ± 1.45
(–0.71—2.17)		0.75 ± 1.97
(–1.48—2.25)		0.04 ± 0.34
(–0.35—0.27)		0.09 ± 0.76
(–0.74—0.75)
SUTA42.50 ± 1.73
(1.00–5.00)		0.18 ± 0.19
(–0.04—0.40)		0.75 ± 1.17
(–0.28—2.41)		0.07 ± 0.07
(–0.02—0.12)		0.16 ± 0.33
(–0.28—0.48)
WOTH22.50 ± 2.12
(1.00–4.00)		0.96 ± 1.49
(–0.09—2.02)		2.81 ± 1.66
(1.64–3.98)		0.21 ± 0.42
(–0.09—0.51)		1.32 ± 0.45
(1.00–1.64)

The rate of mass change (g/d) for each species obtained from individuals recaptured >1 day from initial capture (fat and lean mass measured by QMR in the field).

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