On 6 February 2003 we observed a Manx Shearwater (Puffinus puffinus) from a promontory at La Bufadora, Baja California, Mexico. We had set up our spotting scopes approximately 50 meters above the Pacific Ocean and were looking west with the sun at our backs at a few northbound Black-vented Shearwaters (Puffinus opisthomelas) approximately 400 meters from shore. San Miguel noticed a different looking shearwater and brought it to McGrath’s attention. Both observers jointly identified the bird as a Manx Shearwater. The bird was visible for about a minute before disappearing to the north. San Miguel sketched it immediately following our observation (Figure 1). The following description combines the field notes from both observers.