Ardea herodias

tags: Great Blue Heron, Ardea herodias, birds, mystery bird, bird ID quiz [Mystery bird] Great Blue Heron, Ardea herodias, photographed in California. [I will identify this bird for you in 48 hours] Image: Steve Duncan [larger view]. Nikon D200 w/ Nikkor 300mm f/4 & TC17E. Please name at least one field mark that supports your identification. Review all mystery birds to date.
tags: great blue heron, Ardea herodias, birds, Image of the Day Great Blue Heron, Ardea herodias, engaging in peculiar behavior at the Port Aransas Birding Center, Texas. Image: Scott Lewis [larger view]. Does anyone know the purpose for this behavior?