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Calvert Bluebird Council Yearly Trail Data Summary


Graph based on original created by Chris Crunkleton.

YEAR    Boxes    Nests   Eggs    Hatchlings Fledglings
2022  423492 1967 1696 1547 
2021 350 404 1545 1288 1185 
2020 345  410 15511253  1128
2019 386378 146412301167
 2018 39629611801024969
2017 (g)331 330 14321177 1058 
 2016 (f) 332 232  991   829 761 
2015  309 158 654 517 554
 2014 (e) 314   340  1312 1053 889 
 2013 260  262  1050   891 805 
 2012 (d) 241 259   1030  787 736
 2011 (c) 196       585
 2010 183  201  819  631  577
 2009 271  351  1194  967  869
 2008 240  276  992  775  684
 2007 225  195  761  619  534
 2006 246  181  707  584  540
 2005 (b) 133  65  252  221  179
 2004 266  153  525  365  352
 2003 (a) 294  107  343  255  223
 2002 294  432  1518  1027  867
 2001 343  439  1641  1138  1041
 2000 360  416  1544  1132  1010
 1999 369  449  1521  1133  1045

a Winter 2002-03 took a severe toll on bluebirds in Calvert County
b No data received from Jefferson Patterson Park trail in 2005
c No data for 2011 other than number of boxes and fledglings
d No data received from Twin Shields and Chesapeake Hills golf courses in 2012
e No data received from Chesapeake Hills Golf Course or Mill Creek Middle School; a new trail at Ward Road property was added
f No date from the Industrial Park or the Fair Grounds; Chesapeake Hills Golf Course closed. 
g Four additional trails added in 2017

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