Rocky Point (puerto penasco mexico) birding:
I was fortunate enough to run across Steve Ganley's excellent
Birding at Puerto Penasco, Sonora
webpages recently. It looks like he's been keeping track of the species and doing bird counts for quite some time now, since about 1993, and has counted over 300 species in and around Penasco.
He also maintains Checklist of Birds from the Puerto Penasco Region, Sonora, Mexico and it taking information re: sightings in and around Puerto Penasco .
Steve has a wide variety of information of interest to bird watchers, such as his excellent guides to specific birding locations:
Birding around Pelican Point and Cholla Bay
Birding the Estero Morua and Playa Encanto
Birding around Town and the Harbor
Bird Island and Pelagic Birding
Finding Puerto Penasco's Sewage Ponds