Photo © Peter Latourrette Last summer the San Francisco Bay Bird Observatory banded two adult male northern harriers in the sloughs of Alviso. This was part of a study to determine how harriers utilize marsh and salt pond habitats. The two banded harriers have blue circular patagial tags (wing tags) on their right shoulders that are numbered “1” or “2”. Unfortunately, after we banded the birds, they disappeared from the area and we did not see them for the remainder of the season. If anyone sees the tagged harriers please email Caitlin Robinson, at crobinson@sfbbo.org with the date and location in which the birds were seen. Also, please record what type of habitat the birds are in (marsh, slough, salt pond, upland) if possible.

The GGRO is a program of the Golden Gate National Parks Conservancy in cooperation with the National Park Service.