fauna « Extension's Sustainable Tourism Blog

What lives in those exposed large, stick nests built on power poles, communication towers, and large trees? Most likely an Osprey.

Osprey image from Oregon Department of Fish & Wildlife

As you can imagine, a bird with a nearly 6-foot wingspan builds a big nest. Now imagine the bird adding a bit more to its nest each year. In the end, it is hard to imagine a nest becoming, over time, 10–13 feet deep and 3–6 feet in diameter!

Nest Challenges

Osprey build big nests and will build on any natural or man-made structure that meets its needs. Sometimes, what looked like a good choice doesn’t work out. Osprey nesting has caused power and service outages. There is always a risk of being electrocuted or collisions.

An Osprey’s nest contains more than just sticks we can see. Moss, bark, vines, grass, and lichen make the nest comfortable. But the birds will also add in other interesting things such as fishing line, baling wire, Styrofoam, and sometimes even plastic containers. Baling wire and fishing line can be fatal if the birds or young become entangled.

Nesting platforms and mitigation techniques reduce these conflicts and increase the number of birds and survival. The species is considered a conservation success story.

Where to see them

You can find Osprey nests near a lake, pond, swamp, reservoir, river, etc. Live fish is key part of their diets unlike other raptors. They will also eat other smaller birds, snakes, voles, squirrels, muskrats, and salamanders.

Feet first!

Osprey are amazing fishers. Part of their fishing success, compared to other hawks, is undoubtedly due to an unusual toe/claw placement that helps them grip fish tightly. Their real success, however, is in technique.

The technique? Osprey dive feet first into shallow waters (up to about 3 feet) and grab a fish. They will also do this in deeper water where fish swim near the surface. Osprey have water-resistant feathers are the only raptors that dive.

Amazing Migration

In recent years, the number of Osprey residing year-around on the Pacific coast has increased. Normally, the birds would migrate as far south as Honduras. Researchers have found that some Osprey will migrate around 160,000 miles in their lifetimes. They are not sure what is causing this change.

Protection

Osprey are an amazing raptor and are protected by the Migratory Bird Treaty Act (MBTA) 16 U.S.C. Sections 703-712 of 1918 (as amended). All active nests (incubating adult, eggs, or young present) of migratory bird species are also protected by the MBTA. In Oregon, Osprey are protected by both state statute and Oregon Department of Fish and Wildlife administrative rules. Oregon Revised Statute (ORS 498) protects osprey from take, disturbance and harassment. Oregon Administrative Rule (OAR) 635-044 0130 categorizes osprey as Nongame Protected Wildlife. It is unlawful for a person to hunt, trap, pursue, kill, take, catch, or have in possession, either dead or alive, whole or in part, any Nongame Protected Wildlife.

References and where to find out more…Check the Oregon Department of Fish & Wildlife site at https://myodfw.com/wildlife-viewing/species/raptors and be sure to download their “Living with Wildlife” brochure at https://www.dfw.state.or.us/wildlife/living_with/docs/osprey.pdf. Another excellent resource is the All About Birds page by the Cornell Lab (see https://www.allaboutbirds.org/guide/Osprey/id).

Depoe Bay, OR does not just have the reputation of being the world’s smallest harbor; it is the “Whale Watching Capital of Oregon’s Coast.”

In this six-acre harbor (also called Depoe Bay) you can come see whales almost year round. During the winter migration, gray whales make the journey south, leaving the waters of Alaska in favor of the warmer water in northern Mexico.

Migrations

This migration usually occurs in late December to February. During the spring migration that begins in March, whales head back up north to Alaska.

While these two migrations are the ideal times in which to see whales, it is almost certain you can see a whale in Depoe Bay any time of the year. This certainty is largely due to the group of gray whales that comprise the Pacific Coast Feeding Group.

Summer Feeding

Instead of making the journey all the way back to Alaska, this group of gray whales spend their summer feeding around the reefs in Depoe Bay. Around 18,000 gray whales pass through Depoe Bay over the course of the winter and spring migrations.

Grey Whale spout – photo taken by Rowland Willis

The most common whale seen off Oregon’s coast is the gray whale. Around 18,000 gray whales pass through Depoe Bay over the course of the winter and spring migrations.

Blue whales and humpback whales can also be spotted but in much deeper waters (usually no closer than 10 miles off the coast). If you’re really lucky, you might even be able to spot a pod of orca whales (also called killer whales). These beautiful predators are most likely spotted during mid-April when they come to intercept baby gray whales.

Charters

Charters like Tradewind Charters, Dockside Charters, Whale’s Tail Charters LLC, and Whale Research EcoExcursions LLC will accommodate any experienced or novice whaler’s needs with an up to two hour long tour, depending on the season.

Information for this post was sourced here.

Crabbing on the Oregon coast? There’s a good chance that you’ll catch a Dungeness or a Red rock crab, two of the most commonly caught crab species.

In 2016, the Dungeness crab was the highest valued fishery in Oregon’s commercial fishing industry at $51.3 million. Red rock crabs are also commercially harvested but are not valued nearly as much in comparison to the larger Dungeness.

Identification

Dungeness and red rock crabs vary in their size, color, habitat, and behavior.

Dungeness crabs are best identified by looking for their large, white-tipped claws, ten carapace (the hard upper shell) spines, and a red-brown to purple coloration. They can grow to be eight-inches across their backs (or carapace).

Red rock crabs have black-tipped claws, a wide fan-shaped carapace, and are usually a dark red color. They are also a bit smaller than Dungeness crabs, usually measuring in at six inches across the upper shell.

Where Found

Dungeness crabs prefer the sandy and muddy areas of shallow lower estuaries. Even so, they are sometimes found in ocean depths of up to 2,000 feet. Red rock crabs tend to live in rockier habitats with higher salinity rates such as a larger estuary.

Next time you are out crabbing, keep an eye out for these two common crabs and make sure to follow harvesting regulations!