TREE SWALLOW NESTING PROJECTS, INC.

a California non-profit public benefit corporation, ID# 77-0437605

 

Project Data

Number of boxes at each site:  
Location*
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
 2005
Hedrick

0

0
0
0
0
15
35
50
40
40
40
40
40
32
  

Saticoy Gravel Pits
0
0
0
0
20
50
50
50
50
41
41
41
40
38
  
Saticoy "Front 60"
3
12
24
36
50
55
55
60
60
60
60
61
60
60
  
Saticoy "Back 40"

0

0

0

0

0

0

0

20

20

20

40

40
45
50
  
Ventura Ponds
17
17
12
12
12
12
12
12
12
12
12
12
17
9
  
S.J. Marsh, Orange Cnty
50
106
112
112
112
  
Spanish Hills
18
18
18
  
River Bottom
5
5
  
El Charro, SLO, Cnty                         20
20
  
Playa Vista, L. A., Cnty                         19 19  
 
*unless otherwise indicated, the locations are Ventura County  

Date first Tree Swallow Eggs Appeared, by site:

  

Saticoy Ponds, United Water Conservation District "Front 60"

Saticoy Pits, United Water Conservation District

Ventura Sewage Ponds

Hedrick Ranches  Friends of the Santa Clara River

Saticoy Ponds, United Water Conservation District, "Back 40"

San Joaquin Marsh Water District Irvine, CA 

Spanish Hills Golf Course Camarillo, California

El Charro Outdoor Education, San Luis Obispo

Playa Vista, Los Angeles County
1991
May 24
April 22
 
1992
April 16
April 22
 
1993
April 16
April 23
 
1994
April 8
May 13
 
1995
March 25
June 17
April 23
 
1996
March 29
April 22
unknown

April 24
 
1997
March 14
April 19
April 16
April 21
 
1998
April 10
April 24
May 4
April 24
 
1999
April 25
May 6
May 10
May 10
 
2000
March 31
April 25
April 13
April 12
 
2001  
April 8
April 24
April 30
unk

April 25
April 4
 
2002
April 22
unk
unk
unk
May 1
March 16
early May
 
2003
March 30
April 23
unk
April 22
April 23
March 15
April
unk
2004
April 2
April 24
April 25  
unk 
April 16
April 3
April 18
unk 
unk
2005
March 20
April 12
April 17
unk
April 14
March 19
no longer monitoring
unk
no longer monitoring
2006
           April 2      
 
   

Notes:  1991, boxes were not placed at the Saticoy Ponds until May 1.   1995, boxes were not placed at the Saticoy Pits until June 1.   1998, El Nino, could not access Hedrick Ranch until April 21. 2001, the road to Hedrick Ranch is closed thru the middle of June, access is very limited.   Spanish Hills Country Club was added in May of 2002, egg date is an approximation  

  
   

Total Number of Tree Swallows Fledged 1991--2005

  
 
   
During the nesting season, which starts in March or April, and lasts thru July, the boxes at each site are monitored weekly.  At the appropriate time, optimally 10 days, the nestlings are banded.  A numbered Fish and Wildlife band is placed on one leg, and a colored band on the other.  The colored band designates the year that the nestling was banded, so that if seen in the field it is possible to determine the age of the bird.  Adult birds are banded only if found in the box with eggs or nestlings.  This does not in any way harm the bird, and after 12 years of experience there has not been an instance of abandonment due to handling of the adult.
  

 

Annual Totals from Saticoy Spreading Grounds, Main Site

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