Bluebirds
BNL has established a bluebird project to enhance the bluebird
population on site. A volunteer carries out this project placing and
taking care of the boxes each year. BNL currently has 46 boxes
located around grassy fields onsite. Each year 19 of the boxes are
successfully used by bluebirds with many of the other boxes being
used by tree swallows, black-capped chickadees, and house wrens. The
boxes are visited several times during the breeding season that
extends from around the middle of April through early September.
Some pairs may nest more than once during this period.
Bluebird boxes
are also used by other birds like this Tree Swallow.
Nest Box Use by Other Species
Bluebird boxes are used by several other species of birds
including tree swallows (see photo), house wren, black-capped
chickadee, and house sparrows. The size of the entry hole limits the
use to birds that are of similar size compared to bluebirds.
Nest Box Nesting Success
As mentioned above BNL has 46 boxes established around suitable
habitat located on Lab property. Individual box use may be variable
from year to year, but nesting success has been consistent over the
past two years with 19 successful bluebird nests. The table below
presents the nesting success for 2001 through 2004.
Bluebird Nest Box Success
Box # |
2001 |
# of nests |
2002 |
# of nests |
2003 |
# of nests |
2004 |
# of nests |
1 |
Empty |
|
Empty |
|
House Wren |
1 |
Few Grasses |
|
2 |
Bluebird |
1 |
Bluebird |
1 |
Bluebird |
1 |
Bluebird |
1 |
3 |
Bluebird |
2 |
Empty |
|
House Wren |
|
Few Grasses |
|
4 |
Bluebird |
1 |
Bluebird |
1 |
House Wren |
|
House Wren |
1 |
4 |
|
|
|
|
Bluebird |
1 |
|
|
5 |
Bluebird |
1 |
Bluebird |
1 |
Bluebird |
1 |
Bluebird |
|
6 |
House Wren |
|
House Wren |
1 |
House Wren |
|
House Wren |
|
7 |
Empty |
1 |
House Wren |
|
House Wren |
|
House Wren |
|
8 |
Bluebird |
1 |
Bluebird |
2 |
Empty |
|
Bluebird |
1 |
9 |
Few Grasses |
|
House Wren |
|
Empty |
|
House Wren |
1 |
10 |
House Wren |
|
Bluebird |
1 |
Empty |
|
Bluebird |
1 |
10 |
|
|
|
|
|
|
House Wren |
1 |
11 |
Bluebird |
1 |
Bluebird |
1 |
Empty |
|
House Wren |
|
12 |
Moss |
|
Chickadee |
1 |
Mushroom |
|
Empty |
|
12A |
|
|
|
|
|
|
Mushrooms |
|
13 |
Empty |
|
Empty |
|
Empty |
|
Empty |
|
14 |
House Wren |
1 |
Chickadee |
1 |
Empty |
|
House Wren |
|
14 |
Bluebird |
1 |
|
|
|
|
|
|
15 |
House Wren |
1 |
House Wren |
1 |
House Wren |
|
Few Grasses |
|
16 |
House Wren |
1 |
House Wren |
|
Bluebird |
1 |
Bluebird |
1 |
16 |
Bluebird |
1 |
|
|
|
|
House Wren |
1 |
17 |
Empty |
|
Bluebird |
1 |
House Wren |
|
House Wren |
|
18 |
Empty |
|
Wasps |
|
Empty |
|
Bluebird |
1 |
19 |
Empty |
|
Tree Swallow |
1 |
Bluebird |
1 |
Empty |
|
20 |
Empty |
|
Bluebird |
1 |
House Wren |
|
Twigs |
|
21 |
House Wren |
1 |
Tree Swallow |
1 |
House Wren |
|
Bluebird |
2 |
21 |
|
|
|
|
Bluebird |
1 |
|
|
22 |
House Wren |
|
House Wren |
|
House Wren |
2 |
New Box |
|
22 |
|
|
|
|
Bluebird |
1 |
|
|
23 |
Bluebird |
2 |
Bluebird |
1 |
Missing Box |
|
Bluebird |
1 |
24 |
House Wren |
1 |
Bluebird |
2 |
Tree Swallow |
1 |
Tree Swallow |
1 |
24 |
Bluebird |
1 |
|
|
Bluebird |
1 |
Tree Swallow |
1 |
25 |
House Wren |
1 |
Tree Swallow |
1 |
Tree Swallow |
1 |
Tree Swallow |
1 |
25 |
Bluebird |
1 |
Bluebird |
1 |
Bluebird |
2 |
|
|
26 |
House Wren |
|
Empty |
|
Bluebird |
1 |
Tree Swallow |
1 |
27 |
Few Grasses |
|
House Wren |
1 |
Tufted Titmouse |
1 |
House Wren |
1 |
28 |
Empty |
|
Wasps |
|
Wasps |
|
Yellow Jackets |
|
29 |
Empty |
|
House Wren |
1 |
Bluebird |
1 |
Tree Swallow |
1 |
30 |
Bluebird |
1 |
Tree Swallow |
1 |
Bluebird |
1 |
Bluebird |
2 |
31 |
Bluebird |
1 |
Empty |
|
Empty |
|
House Wren |
1 |
32 |
Bluebird |
1 |
Bluebird |
2 |
Bluebird |
2 |
Bluebird |
2 |
32 |
|
|
Tree Swallow |
1 |
Empty |
|
|
|
33 |
Bluebird |
1 |
Bluebird |
1 |
Tree Swallow |
1 |
House Wren |
|
33 |
|
|
|
|
Bluebird |
1 |
|
|
33A |
|
|
Bluebird |
1 |
|
|
|
|
34 |
Tree Swallow |
1 |
House Wren |
1 |
House Wren |
|
Empty |
|
34 |
|
|
|
|
Tree Swallow |
1 |
|
|
35 |
Bluebird |
2 |
Bluebird |
1 |
Bluebird |
1 |
Bluebird |
2 |
36 |
House Wren |
|
Bluebird |
1 |
House Wren |
1 |
Bluebird |
2 |
36 |
|
|
Tree Swallow |
1 |
|
|
|
|
37 |
|
|
Wasps |
|
Empty |
|
Bluebird |
1 |
38 |
|
|
Empty |
|
Bluebird |
1 |
Empty |
|
39 |
|
|
Empty |
|
House Wren |
|
Bluebird |
2 |
40 |
|
|
House Wren |
|
House Wren |
|
Bluebird |
2 |
40 |
|
|
|
|
Bluebird |
1 |
|
|
41 |
|
|
House Wren |
|
Empty |
|
Bluebird |
|
42 |
|
|
Empty |
|
Bluebird |
1 |
Few Grasses |
|
43 |
|
|
Few Grasses |
|
Tree Swallow |
1 |
Chickadee |
|
44 |
|
|
Empty |
|
Tufted Titmouse |
1 |
Bluebird |
1 |
45 |
|
|
House Wren |
1 |
Bluebird |
1 |
Bluebird |
|
46 |
|
|
|
|
|
|
Tree Swallow |
1 |
For added information about the eastern bluebird and bluebird
boxes visit the North American Bluebird Society on the web at:
http://www.nabluebirdsociety.org/
Another good site for bluebird information is
http://www.sialis.org
Last Modified: February 1, 2008 Please forward all questions about this site to:
Mary Daum
|