Nature Reclaimed: The Hookton Slough at Humboldt Bay National Wildlife Refuge

Date: July 7, 2013
Place: Humboldt Bay National Wildlife Refuge, Loleta, California
Coordinates:  40.6774, -124.2219
Length: 3 miles in and out
Difficulty: easy

Our morning hike of the Shorebird Loop Trail was not enough for us. After a short lunch break we drove around the Humboldt Bay National Wildlife Refuge to the Hookton Slough Unit and embarked on the Hookton Slough Trail.

Map copied from Hamboldt Bay NWR brochure. Our trail is labeled yellow.

150 years ago, Hookton Slough used to be an active port. Boats used to go up the slough and dock there, right where we parked our car. Carts would ride the dirt, sometimes muddy, roads that connected the town to the port, and the place was busy with human activity.

Hookton Slough, view east

Today, very little remains of all that commerce activity that once took place at Hookton. There is a dock there all right, where people take their kayaks to the water.
We just walked on the trail that stretches along the slough on its southern bank.

Hookton Slough, view west

The trail is completely level, wide and super easy to walk. Even so, we hiked it slowly, because it is also rich with wildlife and other pretty sights.

Pale Swallowtail

The grey overcast was starting to thin out. There was still enough of it though, to make a good background for a flying heron.

Great Blue Heron

There were many weeds in bloom along the trail. Most of them were invasive crucifer species. On the water side there were clusters of cloud-white blossoms: the prevalent California native narrow-leaf milkweed.

Common Yarrow (Achillea millefolium)

 Going out west, I paid more attention to the water side of the trail. Besides the milkweed I took notice of the lichen-decorated levee rocks and the salt marsh swamp fire plants that grew between them.

Lichen and Pacific Swampfire (Salicornia pacifica)

The wind kept blowing in our faces as we headed west. None better to demonstrate that than the flexible blossoms of the tuft grass. The yellowish tips shined and sparkled against the grey background. I couldn't quite capture that effect on camera.

Tuft Grass (Deschampsia caespitosa ssp. holciformis)

A group of great egrets blocked our way. They seemed to have been discussing some serious matter between themselves. As we drew near they flew a bit further down the trail. They did so again and again as we progressed down the trail. Eventually, they flew away altogether.

Great Egret

I looked south. A dark grove of trees far across the field was there, carrying a large number of roosting egrets and herons.

A few more steps and I run into what could possibly have been the point of discussion: a broken egg shell.

 

And another. And another. That entire section of trail was decorated with numerous broken eggs in varying degrees of shatter. Some had still dried yolk smeared on them, suggesting that they were stolen from the nest and eaten, rather than the shells being the removed remains of hatched eggs. The eggs are a but smaller and more slender than an ordinary chicken egg and I suspect they might have originated at the heron colony in that far away grove.
We went on walking. The tide, that was receding the entire time we were walking west, has reached its lowest point and we were nearing the end of the trail.

The changing of the tides at the Hookton Slough. 

Our hike ended abruptly at a gate carrying the sign 'End of Trail'. The trail does continue, however, into private land.

The view beyond the end of Hookton Slough Trail

We stayed there for sometime. The chikas went down to the exposed tidal zone and drew pictures in the sand. As appreciative as I am of my daughters' artwork, I do prefer the natural ripples pattern etched in the sand.

Low tide

Eventually it was time to head back. The sun was making good progress in breaking through the overcast, the tide was coming in now and the smaller birds were all over the place, looking pretty:

Cedar Waxwing

And sounding great:

Song Sparrow

It was only on the way back that I noticed a canal of what looked like fresh water on the east side of the trail. I looked closely, but couldn't see anything swimming there.

The way back didn't yield any more surprises. The chickas were busy looking for ladybugs and snails. They even found some :-)

European Brown Snail

Before long we were back at the parking lot and done with our Forth of July vacation. It was 4 hours of quiet drive all the way back to the Bay Area.


Many thanks to members of the California Native Plants Society for their help in identifying plants!


You can click on the photos to get a better view.

Things I saw in the Slough: Hiking at Humboldt Bay NWR

Date: July 7, 2013
Place: Humboldt Bay National Wildlife Refuge, Loleta, California
Coordinates:  40.6861, -124.2124
Length: 1.75 miles
Difficulty: easy
Comment: bring mosquito repellant.

Map copied from Hamboldt Bay NWR brochure. Our trail is labeled yellow.

The last night of our 4th of July trip we spent in the coastal town of Eureka. We woke up to the chill of a foggy morning which, after the intense heat of Willow Creek, was a much welcomed relief. After a quick breakfast we headed straight to the sole destination we planned for that day: the Humboldt Bay National Wildlife Refuge.

After a short visit to the visitor center we went out on our first trail: the Shorebird Loop Trail, that begins right behind the building.   For about half a mile the trail meanders along a narrow slough. Close to the beginning there is a small observation hut.

A Black-crowned Night Heron on the little foot bridge behind the visitor center

By the time we were there I already had to run twice back to the car to get the chicka's sweater and the bug repellant. Throughout the hike we were walking through a cloud of hungry mosquitoes. We needed the protection.

The ground, even on the trail itself, was completely covered with green vegetation. Many plants were blooming.

Most of what I've seen in bloom were invasive plant species.

Bull Thistle (Cirsium vulgare). Non-native, invasive.

Nonetheless, the flowers were very pretty.

Common Brassbuttons (Cotula coronopifolia). Non-native, invasive.

After half a mile the trail splits and loops around a large pond. The calm water was closely watched by egrets and herons.

Great Egret

The dense cattail thicket provided shelter to many birds. We heard them well enough. On occasions, we saw them too.

Mallard chicks speeding after their camera-shy mother 

If they stayed long enough above the water, that is.

Pied-billed Grebe

The pond water was so calm, like a perfect mirror. It is difficult to select from the many beautiful reflections I photographed that day.

We walked slowly, imbibing the sights and sounds carried by the thick, humid air. As always, the chickas were quick to spot the ground crawlers on the trail.

Stop the traffic! I'm crossing! 

Or those winged ones that just sopped for a rest, like this moth:

 Red-shouldered Ctenucha (Ctenucha rubroscapus)

Bu then the elder chicka made a much more important find: A Virginia Rail that stepped momentarily out of the cattails.

Virginia Rail

Rails aren't that rare. They are, however, very difficult to see. They spend nearly all of their time hiding in the thicket. Needless to say, Papa Quail got very excited about the rail and the chicka was very proud of herself for having spotted it in the first place. In fact, she kept going on and on for the rest of that day about finding a rail for Papa :-)
The trail continues beyond the pond and near the slough that extends from Humboldt Bay. It was low tide and the mud flats were criss-crossed with bird tracks. The birds themselves were no longer there.

We looped back and neared the canal once again.

I was looking at the weeds that were blooming along the canal banks, coloring it with whites, pinks and yellows, and rendering those very same colors to the murky water below.

And it was there, in the canal, while I appreciated the flowers, that I saw something brown swimming. Sure enough: there was a pair of river otters! Right there in front of our eyes!

River Otter

We were very excited, of course. The otters were less excited and swam off.

River Otter

It was a very good hike for viewing wildlife. While there wasn't as much excitement as with the rail and the otters, we were very happy to see the Black-tailed Deer in the meadow behind the canal.

Black-tailed Deer

And as always, the small, pretty singers who hummed all around us while we hiked.

Song Sparrow

At that point were were getting back into mosquito-dom and found out that one layer of bug repellant was not enough. Each of us was sporting quite a few bites. We hurried to the end of the trail.

Black-capped Chickadee busy seed-tasting. 

What can I say? Mosquito bite, plenty enough to play connect-the-dots on our skins were a small price to pay for the chance to walk in this beautiful refuge and to see its rich wildlife.

American Goldfinch, male

We had enough of the mosquitoes but not of the Humboldt Bay NWR. So we packed ourselves and drove around to the other side of the park where, after a quick lunch, we embarked on another hike along the Hookton Slough.


Many thanks to members of the California Wildlife Appreciators for their help in identifying the moth!


A few months after that trip my elder chicka was still talking about the Virginia Rail she had sighted. Being the artist she is, she drew a painting of the rail and added a few avian friends too :-)