Anzalduas County Park is bounded by the Rio Grande River, and a buoy just a short distance from the dock marked the boundary between the United States and Mexico. We had been warned that there were a lot of mosquitoes as well as Border Patrol and police at the park. The mosquito warning was correct, but the law enforcement warning was greatly understated.
We had two target bird species at the Anzalduas County Park. Gray Hawks nest there, and a Tropical Parula had been reported nesting in the Spanish moss hanging from trees near the maintenance building. We arrived at the park just as it was opening at 8:00 a.m. On the road leading to the park, we saw nesting Black-bellied Whistling Ducks and a few Northern Rough-winged Swallows.
Black-bellied Whistling Duck
Northern Rough-winged Swallow
I thought that I heard the Tropical Parula singing, but only a few minutes after we arrived, and before I could locate it, maintenance workers started mowing the grass, and a law enforcement helicopter took off and was flying around the area, and I couldn't hear the bird song any more. We saw a few birds in the park.
Clay-colored Robin (Thrush)
I heard a hawk calling from the dike area, but that was off-limits, so I couldn't look for the hawk. A few minutes later, a Gray Hawk flew overhead. By the time I got my camera on it, the hawk was flying away from, but its key field marks are clearly seen in my photos.
A few minutes later, I saw a Swainson's Hawk kiting - really reminded me of our Virginia Red-tailed Hawks in its behavior. And then the Swainson's Hawk was heading right towards me. It was being chased away by a Couch's(?) Kingbird.
On our way out of the park, we saw a Black Phoebe.
Click here to continue on the trip to the Bentsen-Rio Grande Valley State Park