by Darcy Thomas

Pine Grosbeak – Photo Credit: Jake Bramante

New birds have recently been added to the bird list for Owen Sowerwine Natural Area (OSNA). Derrick Rathe spotted two new birds during an outing on Nov.17, 2020, which adds the Cassin’s Finch and White-winged Crossbill to the OSNA bird list. On Dec. 4, 2020, Tony Lloyd saw four Pine Grosbeak which were added to the list. The Pine Grosbeak had previously been observed only adjacent to Owen Sowerwine. This brings the total number of birds seen in this beloved birding Hotspot to 157 species.

The latest version of the OSNA Bird List can be found at The list is updated as new birds are reported. If you see a species during a trip to OSNA that is not on this list please let Darcy Thomas ( know and she will add your sighting. You may also send any pictures you take and a note if you give permission for their use in the Pileated Post newsletter or on the FAS website.