Sunday, February 6, 2011

Brown Shrike from Asia visits California...and sightings of other animals.

A Brown Shrike,  Lanius cristatus is a Eurasian bird species; it is extremely rare for individuals to stray to North America. Like most other shrikes, it has a distinctive black "bandit-mask" through the eye and is found mainly in open scrub habitats, where it perches on the tops of thorny bushes in search of prey.

Several populations form distinctive subspecies which breed in temperate Eurasia and migrate to their usual winter quarters in tropical Asia.  This bird was visiting a coastal band of freshwater ponds with grasses, cattails and willow. 
Los Angeles

Mountains of N. California

This is the third record in California, with a handful of other North American records in Alaska and one in Nova Scotia.  The bird had been there for weeks and Gary Lindquist and Jeff Marszal were quick to spot the bird the day I arrived on Clam Beach, McKinleyville, California.

The bird is much more difficult to observe on cool, cloudy or wet days and we witnessed a correlation of activity with sunshine, as the bird sallied for suddenly active insects.  Gary mentioned he believed frogs may be taken also and many were calling in the coastal freshwater ponds.




The bird frequents this shrubby vegetation.



Brown Shrike (c) Gary Linquist
Here is a link to more on NA records of the Brown Shrike.

http://www.chebucto.ns.ca/Environment/NHR/Shrike/photographs.html


American Pipit



Elephant Seals (c) Gary Linquist
Brewer's Blackbird, female

Brewer's Blackbird, male


Black Oystercatcher (c) Gary Linquist

Six Rivers National Forest
After leaving the coast a nice stream was explored in Six Rivers National Forest that held a jittery American Dipper.

American Dipper


Bean Goose, Taiga subspecies (c) Gary Linquist
The middle bird was at Salton Sea in SW California in late 2010- early 2011. I was able to get to the inland sea due to snow delays in the east that gave me an unexpected day in S Cal.  This subspecies may be split into a separate species from other forms that have been seen in Alaska in the past.



Coast Redwood - The Global King of Biodiversity

The Coast Redwood is the tallest species on earth, forming forest stands of unsurpassed biomass.  Sequoia sempervens (ever living), was probably named in honor of the Cherokee leader Sequoyah of Tennessee.  It reaches 379 feet with a base diameter of 22 feet and can live to 2,000 years.


The largest individual tree was discovered only in 2006 during a survey of a remote section of Redwood National Park in NW California.  Below there is a video of the record tree being measured.




I met with Jeff Marszal, a Resource Management Specialist to plan upcoming NBP projects and we were able to visit this incredible park.  He had told me about the difficult forest survey conditions, with steep slopes, dark conditions, wet understrory and fallen logs 20 feet high and 200 feet long.  It was time consuming, but worth it to hike through this Biosphere Preserve with the sky blocked out by massive tree after tree.



This is an ancient community, dominated by taxa and biodiversity from the Age of Dinosaurs, such as mosses, ferns, conifers, spiders, fish and amphibians.  Warm air from the land passes over the inshore waters forming fog that precipitates out on the vegetation like it once did in most of North America when moist, redwood like forests were dominated by giant reptiles.





Elephant Seal (c) Gary Linquist





The Roosevelt or Olympic Elk prefers open areas but also seeks out forests.  This is the largest of the four remaining subspecies of elk.  

The forest is too dark to get a clear panaromic view even with flash equipment.



Same tree as above but the flash was moved closer. 






The Coast Redwoods range along a narrow strip of habitat along the NW coast of North America.  They provide a home for many species including the puffin-like Marbled Murrelet whose habit of nesting in trees was suspected but not documented until a tree-climber found a chick in 1974.  It was one of the last North American bird species to have its nest described. The Marbled Murrelet has experienced declines due to logging and any significant climate change could impact many species including the Coast Redwood. 

That is a pair of lime green binoculars on the trunk of this Coast Redwood that was over 20 feet in diameter.

Link to videos of the largest tree in the world being measured.

http://www.monumentaltrees.com/en/trees/coastredwood/video/