G.B.H.
Great blue heron (Ardea herodias), Tres Rios Overbank Wetlands, Phoenix, Arizona. Please click photo for enlarged view.
G.B.H.
Great blue heron (Ardea herodias), Tres Rios Overbank Wetlands, Phoenix, Arizona. Please click photo for enlarged view.

Red-winged blackbird (Agelaius phoeniceus), Tres Rios Overbank Wetlands, Phoenix, Arizona.
Red-winged blackbird (Agelaius phoeniceus), Tres Rios Overbank Wetlands, Phoenix, Arizona.

Typha.
Typha.

Canyon ragweed (Ambrosia ambrosioides), at Rio Salado Habitat Restoration Area, Phoenix, Arizona.
The lightest touch released clouds of irritating pollen from these flowers. I had to give my camera a good cleaning after taking this photo.
Canyon ragweed (Ambrosia ambrosioides), at Rio Salado Habitat Restoration Area, Phoenix, Arizona.
The lightest touch released clouds of irritating pollen from these flowers. I had to give my camera a good cleaning after taking this photo.
I made a return visit to the
Rio Salado Habitat Restoration Area at dawn this morning, to check on my neighborhood burrowing owls (Athene cunicularia). Breeding season begins soon, and I’m hoping to see some fuzzy little owlets in a few months.

I made a return visit to the
Rio Salado Habitat Restoration Area at dawn this morning, to check on my neighborhood burrowing owls (Athene cunicularia). Breeding season begins soon, and I’m hoping to see some fuzzy little owlets in a few months.
Coin-toss cholla.
This is new growth on either staghorn or buckhorn cholla (Cylindropuntia versicolor or C. acanthocarpa, respectively). Both species occur locally, so I see one or the other frequently, but they look so similar they defy my small
diagnostic skills. Did I mention that they also readily hybridize where their ranges overlap? Of course they do, making it nearly impossible for tyros like me to identify them!
At Pima Wash, South Mountain Preserve, in Phoenix, Arizona.