Statistics & Data
Our records are important because it helps us know more about the long term trends and day to day problems for the local bluebird population.
MBTCS Annual Data
Our data is reported by a network of volunteer Trail Monitors.
Trail Monitors are encouraged to submit their data to help with our year-over-year consistency of data and statistics. In 2020 we had approximately 48% of our nest boxes reporting data, compared to 45% in 2019 and 53% in 2018.
Total Fledged By Year 2014-2020
- Total Fledged
- Total Nest Boxes Reported
- Total Fledged
- Total Nest Boxes Reported
2020
Trail Monitor Annual Report Data
1,504 of 3,102 nest boxes reported
Nest Success 2020
Brood Comparison 2020
First Brood Failure 2020
- Sterile
- Abandoned
- Dead
- Sterile
- Abandoned
- Dead
Second Brood Failure 2020
- Sterile
- Abandoned
- Dead
- Sterile
- Abandoned
- Dead
Nest Box Usage 2020
Nest Box Tenants 2020
- Bluebird
- Swallow
- Wren
- Other
- Bluebird
- Swallow
- Wren
- Other
2019
Trail Monitor Annual Report Data
1,185 of 2,627 nest boxes reported
Nest Success 2019
Brood Comparison 2019
First Brood Failure 2019
- Sterile
- Abandoned
- Dead
- Sterile
- Abandoned
- Dead
Second Brood Failure 2019
- Sterile
- Abandoned
- Dead
- Sterile
- Abandoned
- Dead
Nest Box Useage 2019
Nest Box Tenants 2019
- Bluebird
- Swallow
- Wren
- Other
- Bluebird
- Swallow
- Wren
- Other
2018
Trail Monitor Annual Report Data
1,351 of 2,565 nest boxes reported
Nest Success 2018
Brood Comparison 2018
First Brood Failure 2018
- Sterile
- Abandoned
- Dead
- Sterile
- Abandoned
- Dead
Second Brood Failure 2018
- Sterile
- Abandoned
- Dead
- Sterile
- Abandoned
- Dead
Nest Box Usage 2018
Nest Box Tenants 2018
- Bluebird
- Swallow
- Wren
- Other
- Bluebird
- Swallow
- Wren
- Other
Historical MBTCS Annual Data 1994-2020
- Successful Nests
- Bluebird Eggs
- Fledged
- Successful Nests
- Bluebird Eggs
- Fledged
Historical MBTCS Annual Data 1994-2020
- Successful Nests
- Tree Swallow Nests
- Successful Nests
- Tree Swallow Nests
Historical MBTCS Annual Data 1994-2020
- Nestling Fledglings
- Dead Nestlings
- Nestling Fledglings
- Dead Nestlings