lots of eyasses!
so many babies right now! in addition to the exciting black hawk / red-shoulder nest and eyas (in my last post), i’ve gotten to see some other fun sites.
the three eyasses at the fruitvale bridge have successfully fledged and are learning to fly. when i was there last week, they were still unsteady in their flight, and one was doing a lot of “practice flapping” while gripping tightly onto the bridge span. so fun to watch. he took a little time to stare down at the strange two-legged staring up at him. when the adult female showed up (empty taloned), one of the young kept harassing her and pushing her off her perch. they are a hungry lot!
i stumbled on a nest that i hadn’t ever seen before, after hearing the young begging for dinner. this red-tailed hawks nest near wildcat canyon should be vacant very soon – these young are looking ready to go. i saw their parents hunting until well after dark trying to keep their bellies full, not an easy job!
i’m still hopeful that i’ll get to see some young harriers soon, for surely the behavior of the the pair (pictured in some previous posts) in the marsh by the bay indicates they are around.
sonoma coast northern harriers
On this picture you can see the owl-like facial disk that Northern harriers wear:
Northern harriers are found in open grass and marsh lands (historically called the “marsh hawk”), and they tend to fly low over the landscape in search of small mammals, insects and lizards which are one of their main sources of prey. They have a small facial disk, similar to owls, and it is believed they use this to use focus sound when hunting in the same way that it is said that owls do.
Males and females are sexually dimorphic, meaning in this case that they have very different adult plummages. Males are white and gray with black on the wingtips of the primary feathers, while females (and sub-adults) are dark brown overall with a cinnamon or pumpkin coloring on their underside (sub-adults tend to have more of a cinnamon coloring). One of their features that is helpful for in-flight ID is their white rump patch, seen on all of them. They also tend to hold their wings in a slight dihedral (v-shape), while gliding low over the ground.
Interesting, these birds nest on the ground.
They are fun to watch, as they glide over the landscape almost like butterflies teetering in the wind.