![]() |
HOME | AREA BIRDING DATA | FIRST SIGHTINGS | NESTING BOXES | CHRISTMAS COUNTS |
AREA BIRDING DATA:
Nesting Box Usage 1985-2008 by Jack Rensel |
For twenty four years, Wasatch Audubon (WAS) has been providing and surveying bird boxes in the Ant Flat and Monte Cristo areas. This project was originally part of an effort by Don Paul, Non-Game Coordinator for the Utah Division of Wildlife Resources, and WAS to study the habitat of secondary cavity nesting birds.
Each year seems to reveal different results due, primarily, to weather conditions (it�s not easy being a bird!). This year was no exception�Monte Cristo had the latest spring we can remember, with snow banks and bare trees on June 21st when we checked the 103 nest boxes on our four routes. Only 72 boxes showed signs of occupancy, the third lowest rate in fifteen years. Since the Monte Cristo Highway route was our highest elevation site and showed below normal use, we did a follow-up check to see if birds would nest later. In this case, the birds did not nest there later, probably nesting at lower elevations where conditions were more suitable. Our fall nest box check was conducted on October 9th when nesting success was determined and the boxes cleaned out in preparation for next year�s use. |
YEAR |
TOTAL
BOXES |
TOTAL
BOXES USED |
TREE
SWALLOWS |
MOUNTAIN
BLUEBIRDS |
HOUSE
WRENS |
OTHER
BIRDS |
TOTAL
FLEDGED |
||||||||
BOXES USED |
#
Birds Fledged |
BOXES USED |
#
Birds Fledged |
BOXES USED |
#
Birds Fledged |
BOXES USED | |||||||||
# | % | # | % | # | % | # | % | # | % | # | |||||
2008 | 103 | 72 | 70.0 | 17 | 16.5 | 61 | 19 | 18.4 | 66 | 36 | 35.0 | 141 | 268 | ||
2007 | 102 | 78 | 76.5 | 20 | 19.6 | 58 | 22 | 21.6 | 61 | 36 | 35.3 | 159 | 278 | ||
2006 | 105 | 82 | 78.1 | 20 | 24.4 | 84 | 20 | 24.4 | 59 | 42 | 51.2 | 218 | 361 | ||
2005 | 103 | 96 | 93.0 | 18 | 18.7 | 77 | 19 | 19.8 | 62 | 59 | 61.5 | 288 | 427 | ||
2004 | 109 | 97 | 89.0 | 28 | 28.8 | 110 | 26 | 26.8 | 88 | 43 | 44.3 | 156 | 354 | ||
2003 | 121 | 90 | 74.0 | 30 | 33.3 | 96 | 27 | 30.0 | 93 | 32 | 35.8 | 62 | 251 | ||
2002 | 118 | 70 | 59.0 | 35 | 50.0 | 155 | 17 | 24.2 | 70 | 18 | 28.7 | 106 | 331 | ||
2001 | 110 | 82 | 71.9 | 45 | 54.8 | 127 | 22 | 26.8 | 39 | 15 | 18.3 | 38 | 204 | ||
2000 | 107 | 90 | 84.1 | 58 | 64.4 | 22 | 24.4 | 10 | 11.1 | ||||||
1999 | 105 | 85 | 80.9 | 55 | 64.7 | 20 | 23.5 | 10 | 11.7 | ||||||
1998 | 116 | 92 | 79.3 | 39 | 42.4 | 22 | 23.9 | 31 | 33.7 | ||||||
1997 | 106 | 90 | 84.9 | 53 | 58.9 | 23 | 25.6 | 14 | 15.6 | ||||||
1996 | 109 | 80 | 73.4 | 38 | 47.5 | 29 | 36.2 | 13 | 16.2 | ||||||
1995 | 103 | 73 | 70.9 | 30 | 41.1 | 25 | 34.2 | 18 | 24.7 | ||||||
1994 | 99 | 82 | 82.8 | 33 | 40.2 | 19 | 23.2 | 29 | 35.4 | 1 | 1.2 | ||||
1993 | No data available | ||||||||||||||
1992 | 175 | 117 | 66.9 | 20 | 17.1 | 17 | 14.5 | 80 | 68.4 | ||||||
1991 | 166 | 78 | 47.0 | 12 | 15.4 | 10 | 12.8 | 56 | 71.8 | ||||||
1990 | 155 | 91 | 58.7 | 12 | 13.2 | 13 | 14.3 | 65 | 71.4 | 1 | 1.1 | ||||
1989 | 149 | 89 | 59.7 | 15 | 16.9 | 10 | 11.2 | 63 | 70.8 | 1 | 1.1 | ||||
1988 | 116 | 86 | 74.1 | 8 | 9.3 | 18 | 20.9 | 60 | 69.8 | ||||||
1987 | 134 | 104 | 77.6 | 19 | 18.3 | 14 | 13.5 | 71 | 68.3 | ||||||
1986 | 154 | 92 | 59.7 | 9 | 9.8 | 11 | 12.0 | 72 | 78.3 | ||||||
1985 | 153 | 89 | 58.2 | 5 | 5.6 | 7 | 7.9 | 77 | 86.5 | 1 | 1.1 |
HOME | AREA BIRDING DATA | FIRST SIGHTINGS | NESTING BOXES | CHRISTMAS COUNTS |