=_Pelecanus occidentalis_= Gmelin: Brown Pelican.--Three individuals flew north over the surf near Camp 1 on July 7, and a lone bird was seen diving into the Gulf a short distance beyond the surf near Camp 2 on July 9. Birds seen by us probably were of the population named _P. o. carolinensis_, which is resident along the Gulf coast (Mexican Check-list, 1950:21). =_Phalacrocorax_= sp.: Cormorant.--From 80 to 100 adult and juvenal cormorants were on the laguna at Camp 2 on July 8 and 9. Probably they were Common Cormorants (_P. olivaceus_), but, because specimens were not taken, we cannot eliminate the possibility that some (or all) were Double-crested Cormorants (_P. auritus_). The former breeds in coastal lowlands of eastern México, whereas the latter is known in eastern México only as a winter visitant and has not been recorded in Tamaulipas (Mexican Check-list, 1950:24). =_Fregata magnificens_= Mathews: Magnificent Man-o'-war Bird.--An observation of a lone bird circling high over the laguna at Camp 2 on July 9 seemingly constitutes the third record of this species in Tamaulipas. Previous records were reported by Robins, Martin, and Heed (1951:336), who found "large numbers" in the Barra Trinidad region (8 miles north of Morón) on April 27 to 29, 1949, and mentioned an immature male taken at Tampico on April 23, 1923; this specimen has been identified by P. Brodkorb as _F. m. rothschildi_. =_Ardea herodias_= Linnaeus: Great Blue Heron.--Our records of this heron are limited to the following observations: four individuals on the beach and seven in the laguna at Camp 1, July 7; one on the beach 52 miles south of Washington Beach, July 8; one 74 miles south of Washington Beach, July 8; two at Third Pass, July 8; 41 standing on mud-flats at the edge of the laguna near Camp 2, July 9; nine on the beach 56 to 73 miles south of Washington Beach, July 10; one on the beach 42 miles south of Washington Beach, July 10. The status of the Great Blue Heron in coastal Tamaulipas remains to be determined. The subspecies _A. h. wardi_ (considered a synonym of _A. h. occidentalis_ by Hellmayr and Conover, 1948) is resident and breeds on the Gulf coast of Texas and is to be expected as a resident in Tamaulipas (Mexican Check-list, 1950:27). The species may breed south to Veracruz, where Loetscher (1955:22) reports it is "regular at nearly all seasons, chiefly on the coastal plain"; he records an observation near Tamós on July 1. The subspecies _A. h. herodias_ and _A. h. treganzai_ winter through much of México and have been recorded in Tamaulipas (Mexican Check-list, 1950:27). =_Florida caerulea_= (Linnaeus): Little Blue Heron.--We saw a white (immature) individual feeding with Reddish Egrets along an inlet at Camp 2 on July 8.