Stewardship Report: Plenty of Action for Birdwatchers

By -
There has been plenty for birdwatchers to see at Haystack Rock this week, including three kinds of ducks! In addition to harlequin ducks, which are frequent visitors, HRAP Naturalists have spotted mergansers and surf scoters in the past few days. Common murres also made an appearance again, with approximately 1,000 visiting the rock late last week. Bald eagle and peregrine falcon visits are a near daily occurrence. An eagle took a common murre last Friday, only to have a falcon try to steal it! – but the eagle prevailed. The less-dramatic, but much cuter, black oystercatcher pair has been seen every few days feeding in the tidepools during low tide.

Surf scoter



 
Harlequin duck

Comments

Post a Comment

Popular posts from this blog

Nudibranchs in the Tidepools

By -
Image
Nudibranchs, also referred to as sea slugs, can frequently be spotted in the tidepools at Haystack Rock. There are many species of nudibranch, most having outstanding markings and colors. The nudibranch feed on bryozoans, hydroids and sponges and it's color can be changed by the food it eats.   The nudibranch has a pair of sensory projections on their head, called rhinophores, which allow them to smell and taste. Virtually all nudibranchs have some form of eyes but they are not well developed and in most cases are little more than a pigment spot in the head near the rhinophores.  The nudibranch breathes through gill projections which extract oxygen from the seawater. The Pacific Northwest has more than 200 species of nudibranchs. The Opalescent Nudibranch ( Hermissenda crassicornis ) could be called 'showy'. It is found from Alaska to Baja, California and can grow to two inches in size. At Haystack Rock, it can be found in the sandy bottom of a tidepool. It is slender wit...
Read more

What Is That Foam?

By -
Image
Visitors to Haystack Rock were recently greeted with an intertidal covered with a brownish foam and, naturally, asked 'What is That Foam?' The foam has been prevalent up and down the north Oregon coast during the last week, evident both in the surf, on the beaches and in the intertidal zone. Sea Foam on Cannon Beach, Spring 2014 Photo Courtesy of Carolyn Propst The foam is not pollution but is created by microscopic phytoplankton. Phytoplankton are one-celled organisms that are at the bottom of the ocean's food chain. Diatoms are the most common form of phytoplankton on the north Oregon Coast. The phytoplanktons contain a fatty-like material, called cytoplasm, that holds them together. When the phytoplanktons die, the cytoplasm 'glue' the individual skeletons together. This creates layers that trap air within the ocean water, increasing the surface tension and creating the bubbles. When there are a lot of phytoplankton more of them die creating even more ...
Read more