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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.

Forms and Checklists

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
Data varies by year depending on Trail Monitor reporting

2020

Trail Monitor Annual Report Data

1,504 of 3,102 nest boxes reported

Nest Success 2020

  • Nests
  • Successful Nests
  • Eggs
  • Fledged
  • Nests
  • Successful Nests
  • Eggs
  • Fledged

Brood Comparison 2020

  • Nests
  • Successful Nests
  • Eggs
  • Fledged
  • Nests
  • Successful Nests
  • Eggs
  • Fledged

First Brood Failure 2020

  • Sterile
  • Abandoned
  • Dead
  • Sterile
  • Abandoned
  • Dead

Second Brood Failure 2020

  • Sterile
  • Abandoned
  • Dead
  • Sterile
  • Abandoned
  • Dead

Nest Box Usage 2020

  • 2020
  • 2020

Nest Box Tenants 2020

  • Bluebird
  • Swallow
  • Wren
  • Other
  • Bluebird
  • Swallow
  • Wren
  • Other
1,504 of 3,102 nest boxes reported

2019

Trail Monitor Annual Report Data

1,185 of 2,627 nest boxes reported

Nest Success 2019

  • Nests
  • Successful Nests
  • Eggs
  • Fledged
  • Nests
  • Successful Nests
  • Eggs
  • Fledged

Brood Comparison 2019

  • Nests
  • Successful Nests
  • Eggs
  • Fledged
  • Nests
  • Successful Nests
  • Eggs
  • Fledged

First Brood Failure 2019

  • Sterile
  • Abandoned
  • Dead
  • Sterile
  • Abandoned
  • Dead

Second Brood Failure 2019

  • Sterile
  • Abandoned
  • Dead
  • Sterile
  • Abandoned
  • Dead

Nest Box Useage 2019

  • Total
  • Total

Nest Box Tenants 2019

  • Bluebird
  • Swallow
  • Wren
  • Other
  • Bluebird
  • Swallow
  • Wren
  • Other
1,185 of 2,627 nest boxes reported

2018

Trail Monitor Annual Report Data

1,351 of 2,565 nest boxes reported

Nest Success 2018

  • Nests
  • Successful Nests
  • Eggs
  • Fledged
  • Nests
  • Successful Nests
  • Eggs
  • Fledged

Brood Comparison 2018

  • Nests
  • Successful Nests
  • Eggs
  • Fledged
  • Nests
  • Successful Nests
  • Eggs
  • Fledged

First Brood Failure 2018

  • Sterile
  • Abandoned
  • Dead
  • Sterile
  • Abandoned
  • Dead

Second Brood Failure 2018

  • Sterile
  • Abandoned
  • Dead
  • Sterile
  • Abandoned
  • Dead

Nest Box Usage 2018

  • Total
  • Total

Nest Box Tenants 2018

  • Bluebird
  • Swallow
  • Wren
  • Other
  • Bluebird
  • Swallow
  • Wren
  • Other
1,351 of 2,565 nest boxes reported
 

Historical MBTCS Annual Data 1994-2020

  • Successful Nests
  • Bluebird Eggs
  • Fledged
  • Successful Nests
  • Bluebird Eggs
  • Fledged
Observations collected by Bluebird Trail Monitors, data varies by year depending on reporting

Historical MBTCS Annual Data 1994-2020

  • Successful Nests
  • Tree Swallow Nests
  • Successful Nests
  • Tree Swallow Nests
Total Bluebirds Nests vs Tree Swallow Nests

Historical MBTCS Annual Data 1994-2020

  • Nestling Fledglings
  • Dead Nestlings
  • Nestling Fledglings
  • Dead Nestlings
Observations collected by Bluebird Trail Monitors, data varies by year depending on reporting

Download Trail Monitor Annual Report Summaries by year