The South Coast of Massachusetts, from the western side of the Cape Cod Canal to the RI border, is home to a significant breeding population of osprey. Since 2004, Allens Pond Wildlife Sanctuary has been monitoring the annual breeding activity of 80 pairs on nearly 100 nesting platforms in Westport and Dartmouth, MA. Since then the monitoring area has been expanding to cover a wider area in southern Bristol and Plymouth counties, including the Great Neck Sanctuary in Wareham, MA.
Mass Audubon-South Coast's Nests
Summary Statistics
| Total Number of Nests | Number of Occupied Territories | Number of Active Nests | Number of Successful Nests | Number of Failed Nests | Number of Young Produced | Number of Young Produced per Active Nests | Number of Young Produced per Successful Nests | |
|---|---|---|---|---|---|---|---|---|
| 2023 | 68 | 65 | 43 | 37 | 4 | 78 | 1.8 | 2.1 |
| 2022 | 166 | 156 | 133 | 94 | 33 | 197 | 1.5 | 2.1 |
| 2021 | 162 | 153 | 140 | 106 | 31 | 227 | 1.6 | 2.1 |
| 2020 | 169 | 161 | 140 | 108 | 28 | 240 | 1.7 | 2.2 |
| 2019 | 127 | 111 | 99 | 64 | 33 | 112 | 1.1 | 1.8 |
| 2018 | 67 | 22 | 20 | 19 | 1 | 42 | 2.1 | 2.2 |
| 2017 | 2 | 2 | 1 | 0 | 1 | 0 | 0.0 | 0.0 |
| 2016 | 6 | 6 | 3 | 2 | 0 | 6 | 2.0 | 3.0 |
| 2015 | 2 | 2 | 2 | 1 | 0 | 1 | 0.5 | 1.0 |
| 2014 | 2 | 2 | 2 | 2 | 0 | 7 | 3.5 | 3.5 |
| 2013 | 4 | 3 | 3 | 1 | 1 | 3 | 1.0 | 3.0 |
| 2012 | 6 | 6 | 6 | 6 | 0 | 11 | 1.8 | 1.8 |
| 2011 | 1 | 1 | 1 | 1 | 0 | 2 | 2.0 | 2.0 |
| 2010 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0 | 0.0 |
| 2009 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0 | 0.0 |
| 2008 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0 | 0.0 |
| 2007 | 1 | 1 | 1 | 1 | 0 | 2 | 2.0 | 2.0 |
| 2006 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0 | 0.0 |
| 2005 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0 | 0.0 |
| 2004 | 1 | 1 | 1 | 1 | 0 | 3 | 3.0 | 3.0 |
| 2003 | 1 | 1 | 1 | 0 | 1 | 0 | 0.0 | 0.0 |
| 2002 | 1 | 1 | 1 | 1 | 0 | 3 | 3.0 | 3.0 |
| 1998 | 1 | 1 | 1 | 0 | 1 | 0 | 0.0 | 0.0 |
| 1997 | 1 | 1 | 1 | 0 | 1 | 0 | 0.0 | 0.0 |
| 1996 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0 | 0.0 |
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