Wednesday, December 1, 2021
Tuesday, November 23, 2021
12-4-2021Shollenberger / Ellis Creek Facility
Over-Wintering Birds of Prey walk and general birding outing.
Meet at Ellis Creek Water Treatment facility 9:30am we will walk until 12:30 or 1pm, depending on what we see.
We'll walk around the Ellis Creek Facility and venture into Shollenberger Park as well.
Focus on Raptor Identification and beginning, novice birding.
Call Larry at 707-791-0335 for details
Wednesday, November 17, 2021
Monday, October 11, 2021
Jenner Headlands Raptor Migration count with The Wildlands Conservancy 10.10.2021..... photos credit / copyright Shabda Kahn
Incredible day of Raptor Migration in the Jenner Headlands Preserve, lots of great looks and close flybys, thank you Shabda for the photos! amazing work!22 ~ Cooper's Hawks, Individual Birds, almost all heading south
14 ~ Sharp-shinned Hawks, Individual Birds all most all heading south
2 ~ Merlin
17 ~ American Kestrel (17 sightings), 12 birds, some seen twice or three times
1 ~ Red-shouldered Hawk
14 ~ Northern Harrier (14 sightings), 8 individual birds
28 ~ Red-tailed Hawks (28 sightings), 18 individual birds
23 ~ Turkey Vultures.
1 ~ cooperative Bobcat, upper Hawk Ridge Trail
Wednesday, October 6, 2021
Oct 10 [Sunday] The Wildlands Conservancy, Jenner Headlands Preserve, Raptor Migration tour
Monday, September 20, 2021
Broad-winged Hawks on the West Coast migration 9-26-2021.... Jenner Headlands Preserve Raptor Migration Hike ~ 10am to 2pm
|Male Kestrel for refence only|
Jenner Headlands Preserve
Raptor migration hike, Sunday 9-26-2021, 10am to 3pm
Go to link:
Friday, September 17, 2021
2021 season dates coming! Tolay Lake Regional Park, Lynch Canyon Open Space, Jenner Headlands Preserve, Estero Americano Coastal Preserve...
Stay tuned, dates coming for West County Hawkwatch 2021/2022 season !
2021 season dates coming!
Tolay Lake Regional Park,
Lynch Canyon Open Space,
Jenner Headlands Preserve,
Estero Americano Coastal Preserve...
Will update soon!
Monday, February 15, 2021
great information on Accipiter's. (tools for your tool kit) Wing Tips: Sharp-shinned and Cooper's Hawks
These two species belong to the genus Accipiter, which contains about 50 other species worldwide. Only one other accipiter, the Northern Goshawk, is found in the USA and Canada. Accipiters' short, rounded wings and long tails are well-adapted for maneuvers in forested habitats.
In today's post we'll discuss how to differentiate this duo while perched; many of these traits can be used for in-flight ID as well. One of the most important themes in this post is that no field mark is reliable on its own. Thus, let a majority of traits lead you to an identification. If there's no majority, it's better to be uncertain than inaccurate!
Wing Tips is written by Tessa Rhinehart.
Cover image: "Wandering Tattler" by Jason Crotty / licensed under CC BY 2.0
The name "Wing Tips" was inspired by Marc Radell, who came up with the phrase during a discussion about identifying broad-winged hawks in flight. Thanks, Marc!
Diopter locking mechanisms
by Diane and Michael Porter
Some binoculars (especially high quality, expensive ones) have locking mechanisms to prevent the diopter setting from getting turned accidentally. The locking mechanisms are varied and often ingenious.
On the Minox HG binocular, you unlock the diopter adjustment mechanism by lifting the silver ring on the right eyepiece (revealing the scale) and turning the ring. When you have it right, you push the ring down again, and the diopter setting is locked until such time as you need it again.
The Leica Ultravid roof prism binocular has an especially elegant diopter solution. There are two knobs on the central column.
Normally, when you are using the binocular, both knobs turn as one, so it's like one big, easy-to-find knob. It looks like the picture above left.
To change the diopter adjustment, you lift the upper knob. The right-hand picture above shows the knob in the up position, revealing a stripe of red. In this position, the upper knob turns independently of the lower focusing knob, fine-tuning the focus of the right eye only. As the knob turns, you can see the adjustment on the face of the scale.
If you are not clear about where the diopter setting is on your binocular, consult the manual that came with it.
Armed with this understanding of the diopter adjustment, you can allow your binocular to do its best for you.
Copyright 2006 Michael and Diane Porter
Tuesday, December 15, 2020
Sunday, November 29, 2020
Some new raptor ID resources (Detroit River Hawk Watch Raptor Guide Material) Some of these look Eastern (Red-tailed and Red-shouldered)