Field Notes Update

Osprey Building a Nest on a Windy Day by Todd Henson

Osprey facing the camera on a windy day, with head feathers sticking straight up.

Osprey don’t have it easy. They build nests close to water with no protection from the elements. I’ve seen osprey nests blown over during strong storms. But these amazing birds just keep rebuilding and moving on.

Today’s photos are of an osprey in Colonial Beach, Virginia, building a nest atop some poles just offshore. It’s a very windy day, as you can see in the photo with the osprey facing the camera. The feathers on the back of its head stand straight up with the wind blowing towards me. This really gives the osprey a wild, aggressive look.

Osprey building a nest on a windy day.

I’ve created cropped versions of both photos giving you closer views of the osprey. Click on any of the images for larger views.

Closeup of osprey facing camera, head feathers upright.

Side view of osprey on its nest on a windy day.

Thinking Through the Shots

I wanted to focus as much as possible on the osprey, meaning I wanted the background to disappear in a blur. The distant shore was quite a distance away, which helped. I was shooting at 400mm focal length, which also helped. My maximum aperture was f/5.6 with the setup I was using but I chose to use f/8 to give a little extra depth of field to capture the osprey in focus. Given the focal length and the distance to the shore, it was enough.

Note, I usually shoot in Aperture Priority mode when background blur is important. This lets me choose the aperture most appropriate for the look I want and lets the shutter speed fall where it will. If I need a faster shutter speed I can then open the aperture further (unless it’s already open all the way) or boost the ISO.

It was a very windy day, so things like the osprey’s feathers were moving. And I wanted to be able to capture the osprey if it flew from the nest. This meant I needed a fast shutter speed. I was shooting with a wide open aperture, which would help give me a faster shutter speed. To increase the shutter speed further I boosted my ISO to 500 (200 is the base ISO for the camera I was using). This let me shoot at a shutter speed of 1/1250 sec.

To sum it all up, I shot at 1/1250 sec, f/8, at ISO 500.

Equipment

I didn’t have my longer lens with me for this shoot, but I did carry along my 70-200mm f/2.8 and a 2x teleconverter. This is how I reached 400mm. The 2x does slow things down, causing slower focusing, and giving me a maximum aperture of f/5.6 instead of the f/2.8 of the lens (2 stops slower). But this combo is smaller and lighter than a larger lens and does give me some versatility allowing both the 70-200mm and 140-400mm ranges. I was happy with the compromise for this trip.

Note, the 2x teleconverter only works with some lenses, so be sure it works with yours before you purchase it.


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Great Blue Heron in a Tree by Todd Henson

A Great Blue Heron landed in a tree right along the trail.

Great Blue Heron are common enough in this area that I’ve photographed them many times. But I never tire of them, and I’m always on the look out for new opportunities. Sometimes I don’t have to look far.

My first image of the heron shows how the eyes are able to see below. It very likely knew we were there; it just wasn't bothered by us.

We were hiking in a nearby wildlife refuge, one I’ve spent a lot of time exploring. Just as we walked under a lone tree between two wetland areas we heard a squawk and a rustle of wings as a Great Blue Heron flew over and landed atop the tree we were walking under.

We froze. Most herons I encounter here are skittish and will fly away when you get too close. As you can see from the photo looking through tree branches, we were almost directly below the heron. We slowly moved to get a better view and the heron stayed where it was, seemingly ignoring us.

I walked back the way we’d come to position myself on the sunlit side of the tree, still moving slowly to avoid spooking the heron. It proved very patient, letting me position myself and create a series of photographs. As I photographed I noticed it making quiet guttural sounds, and could see its throat moving to the sounds. It was an interesting behavior, one the photographs didn’t really capture.

Closeup of the Great Blue Heron's head as it watches the nearby wetlands.

Eventually, we moved on, leaving the heron in peace. As luck would have it the heron flew off not long after we’d moved on. I turned around to watch when I heard it fly off, but wasn’t able to capture any images of it. Maybe next time.

Great Blue Heron in a tree, with its head tilted slightly in my direction.


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Great Blue Heron Swallowing a Fish by Todd Henson

Great Blue Herons are experts at fishing, and they can consume fish you’d think were far too large to fit down their throat. The sequence below shows a Great Blue Heron swallowing what is, admittedly, a small fish. This heron was fishing in a local wetlands park not far from the boardwalk, completely oblivious to the people watching and photographing.

Take a close look at the first photo. Notice how the heron’s eye looks very milky, especially towards the upper right? That’s the bird’s nictitating membrane, an extra eyelid birds have that helps them clean and protect their eyes while still being able to see. It likely closed its nictitating membranes when it plunged its head into the water to catch the fish.

Be sure to click on any of the photographs for a larger view.

And just over 5 seconds later the Great Blue Heron is ready to begin fishing again.

Satisfied with its catch the Great Blue Heron goes back to fishing.


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