HUMMINGBIRD BANDING DATA
from the Rudeen Ranch, Power County, Idaho

Memorial Day Weekend Banding Only

We began banding hummingbirds at the Rudeen Ranch during Memorial Day weekend, 2003. Since then we've continued the Memorial Day weekend (Sunday and Monday) tradition, and have also banded at other times on the ranch. While this adds a wealth of knowledge to overall survivorship and encounter data, it muddies the waters a bit when comparing recaptures across years.

So to remove that bias, here we produce a tally of hummingbird data for Memorial Day Weekend bandings only. For this dataset, we only consider returns (recaptures) for birds banded originally during a Memorial Day Weekend event. If birds were originally banded outside that window during any year, they are not included in this dataset, even if they were later recaptured during a Memorial Day Weekend session. While such a recapture would indicate they are indeed residents of the valley, I consider it best to remove those from this analysis. In an ideal world it would probably be prudent to artifically consider them to be "new bands" at the time of their first re-encounter on Memorial Day, but this adds a level of complexity that is beyond the scope of this analysis at this time.

25-26 May 2003 | 30-31 May 2004 | 29-30 May 2005 | 28-29 May 2006 | 27-28 May 2007

2003
(25-26 May)

Breakdown of 209 hummingbirds banded at the Rudeen Ranch
25-26 May 2003
(M = Male; F = Female)

SPECIES RAW NUMBERS PERCENTAGES
Totals Adult % of Total Adult
209 M F 100% M F
Calliope Hummingbird 176 70 106 84.2% 39.8% 60.2%
Broad-tailed Hummingbird 22 9 13 10.5% 40.9% 59.1%
Black-chinned Hummingbird 11 7 4 5.3% 63.6% 36.4%

top

2004
(30-31 May)

Breakdown of 224 hummingbirds banded at the Rudeen Ranch
(M = Male; F = Female)

SPECIES RAW NUMBERS PERCENTAGES
Totals Adult % of Total Adult
224 M F 100% M F
Calliope Hummingbird 176 81 95 78.6% 46.0% 54.0%
Broad-tailed Hummingbird 24 6 18 10.7% 25.0% 75.0%
Black-chinned Hummingbird 24 10 14 10.7% 41.7% 58.3%

RECAPTURES of hummingbirds originally banded during Memorial Day 2003
"After Second Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2003
Totals ASY Recapture rate ASY
59 M F 28.2% M F
Calliope Hummingbird 49 23 26 27.8% 32.9% 24.5%
Broad-tailed Hummingbird 8 6 2 36.4% 66.7% 15.4%
Black-chinned Hummingbird 2 2 0 18.2% 28.6% 0%

top

2005
(29-30 May)

Breakdown of 304 hummingbirds banded at the Rudeen Ranch
(M = Male; F = Female)

SPECIES RAW NUMBERS PERCENTAGES
Totals Adult % of Total Adult
304 M F 100% M F
Calliope Hummingbird 252 107 145 82.9% 41.2% 57.5%
Broad-tailed Hummingbird 37 23 14 12.2% 62.2% 37.8%
Black-chinned Hummingbird 15 12 3 4.9% 80.0% 20.0%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2004
"After Second Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2004
Totals ASY Recapture rate ASY
106 M F 47.3% M F
Calliope Hummingbird 84 36 48 47.7% 44.4% 50.5%
Broad-tailed Hummingbird 10 2 8 41.7% 33.3% 44.4%
Black-chinned Hummingbird 12 4 8 50.0% 40.0% 57.1%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2003
"After Third Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2003
Totals ATY Recapture rate ATY
53 M F 25.4% M F
Calliope Hummingbird 44 19 25 25.0% 27.1% 23.6%
Broad-tailed Hummingbird 6 4 2 27.3% 44.4% 15.4%
Black-chinned Hummingbird 3 2 1 27.3% 28.6% 25.0%

top

2006
(28-29 May)

Breakdown of 311 hummingbirds banded at the Rudeen Ranch
(M = Male; F = Female)

SPECIES RAW NUMBERS PERCENTAGES
Totals Adult % of Total Adult
311 M F 100% M F
Calliope Hummingbird 273 127 146 87.8% 46.5% 53.5%
Broad-tailed Hummingbird 27 15 12 8.7% 55.6% 44.4%
Black-chinned Hummingbird 9 6 3 2.9% 66.7% 33.3%
HYBRID Broad-tailed x Calliope 2 2 0 0.6% 100% 0

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2005
"After Second Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2005
Totals ASY Recapture rate ASY
88 M F 28.9% M F
Calliope Hummingbird 71 26 45 28.2% 24.3% 31.0%
Broad-tailed Hummingbird 12 6 6 32.4% 26.1% 42.9%
Black-chinned Hummingbird 5 4 1 33.3% 33.3% 33.3%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2004
"After Third Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2004
Totals ATY Recapture rate ATY
44 M F 19.6% M F
Calliope Hummingbird 35 14 21 19.9% 17.3% 22.1%
Broad-tailed Hummingbird 5 0 5 20.8% 0% 27.8%
Black-chinned Hummingbird 4 2 2 16.7% 20.0% 14.3%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2003
"After Fourth Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2003
Totals A4Y Recapture rate A4Y
30 M F 14.4%% M F
Calliope Hummingbird 25 7 18 14.2% 10.0% 17.0%
Broad-tailed Hummingbird 3 1 2 13.6% 11.1% 15.4%
Black-chinned Hummingbird 2 1 1 18.2% 14.3% 25.0%

top

2007
(27-28 May)

Breakdown of 403 hummingbirds banded at the Rudeen Ranch
(M = Male; F = Female)

SPECIES RAW NUMBERS PERCENTAGES
Totals Adult % of Total Adult
403 M F 100% M F
Calliope Hummingbird 335 158 177 83.1% 47.2% 52.8%
Broad-tailed Hummingbird 51 26 25 12.7% 51.0% 49.0%
Black-chinned Hummingbird 15 9 6 3.7% 60.0% 40.0%
Rufous Hummingbird 1 0 1 0.2% 0% 100%
HYBRID Black-chinned x Calliope 1 0 1 0.2% 0% 100%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2006
"After Second Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2006
Totals SY/ASY Recapture rate ASY
83 M F 26.9% M F
Calliope Hummingbird 74 34 40 27.1% 26.8% 27.4%
Broad-tailed Hummingbird 8 5 3 29.6% 33.3% 25.0%
Black-chinned Hummingbird 1 1 0 11.1% 16.7% 0%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2005
"After Third Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2005
Totals ATY Recapture rate ATY
52 M F 17.1% M F
Calliope Hummingbird 43 9 34 17.1% 8.4% 23.4%
Broad-tailed Hummingbird 7 2 5 18.9% 8.7% 35.7%
Black-chinned Hummingbird 2 2 0 13.3% 16.7% 0%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2004
"After Fourth Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2004
Totals A4Y Recapture rate A4Y
29 M F 12.9% M F
Calliope Hummingbird 21 7 14 11.9% 8.6% 14.7%
Broad-tailed Hummingbird 3 0 3 12.5% 0% 16.7%
Black-chinned Hummingbird 5 2 3 20.8% 20.0% 21.4%

RECAPTURES of hummingbirds originally banded during Memorial Day Weekend 2003
"After Fifth Year" aged birds

SPECIES RAW NUMBERS PERCENTAGES
of birds banded in 2003
Totals A5Y Recapture rate A5Y
16 M F 7.7% M F
Calliope Hummingbird 14 4 10 8.0% 5.7% 9.4%
Broad-tailed Hummingbird 1 0 1 4.5% 0% 7.7%
Black-chinned Hummingbird 1 1 0 9.1% 14.3% 0%

top

To return to the Rudeen Ranch page, click here.

Email Stacy