On my way west to my parents' place, I stopped by this park by the Trinity River and walked along the trail some.
Double-crested Cormorant (Phalacrocorax auritus)
10 September 2014: Observed a Double-crested Cormorant (Phalacrocorax auritus) at the North Lakes Park (south branch) perched in between foraging episodes. Double-crested Cormorant is a North American species entirely as it lives permanently in the Florida Peninsula and winters along the Gulf of Mexico's coastal areas all along the rest of the Southeast in the United States and in Mexico down through Veracruz approximately. It also winters along the southern California Pacific coastal area and flies across or migrates throughout the rest of the United States in an opportunistic sense. Thus this bird may be seen at any time of a given year anywhere in the continental US. It breeds in the states associated with the Upper Midwest of the US and the southcentral provinces of Canada. It also has a permanent presence along the Aleutian Islands in Alaska making this its most northern presence and some parts of Alaska provide breeding territory for the species as well. Because of its North American presence Double-crested Cormorant is an authentic resident of the Western Hemisphere. North Lakes Park is administered by the City of Denton, Texas.
Source: "Double-crested Cormorant," All About Birds, Cornell Lab of Ornithology, range map, description, photographs, resource links, accessed 12.25.15, https://www.allaboutbirds.org/guide/Double-crested_Cormorant/id