New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here


by: George Hilll

EcologyLaboratory BIO41L

George Hilll

GPA 3.64


Almost Ready


These notes were just uploaded, and will be ready to view shortly.

Purchase these notes here, or revisit this page.

Either way, we'll remind you when they're ready :)

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Class Notes
25 ?




Popular in Course

Popular in Biology

This 3 page Class Notes was uploaded by George Hilll on Monday October 5, 2015. The Class Notes belongs to BIO41L at City College of San Francisco taught by CrimaPogge in Fall. Since its upload, it has received 31 views. For similar materials see /class/219516/bio41l-city-college-of-san-francisco in Biology at City College of San Francisco.


Reviews for EcologyLaboratory


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/05/15
Appendix 8 How to Use Your Binoculars Source Birders Digest httpWWWbildvvatbi quotU r quot you gquot 39 quotquot lucularsaspx Binoculars are the most important tool for a bird watcher A binocular magni es anything you view through it giving you a much better look at it than you get with the unaided eye For birders this helps us to see the field marks on birds so we can identify them Tip Always use your binocular39s neck strap Carrying your optics around in your hand by the strap is asking for trouble The strap keeps the binoculars safe around your neck and against your chest within easy reach of your hands Some birders myself included prefer to use a binocular harness which uses straps over the shoulders and across the back to distribute the weight of the binoculars The most useful binoculars for bird watching incorporate a few basic features They have a central focus wheel and a diopter focus adjustment The diopter is often part ofthe righthand eyepiece on a binocular The purpose ofthe diopter is to compensate for the differences between your two eyes because no two eyes are the same or have the same ability to focus Adjusting both the diopter focus and the central focus is how you get the clearest possible image from your binocular Warning lfyour binocular does not have a diopter or if it lacks a central focus wheel some models make you focus each eyepiece individually these are not good optics for birding Consider replacing them with a pair more suited for bird watching Focusing Start by adjusting the distance between the two barrels ofthe binocular so that they are the right width for your eyes Too far apart or too close together and you will see black edges in your field of view If you have the spacing right your view will be a perfect circle Next nd something to focus on such as a dark tree branch against the blue sky a street sign or an overhead wire Focus with both eyes open by turning the central focus wheel Now it39s time for the ne focusing Close your right eye and using only your left eye adjust the focus wheel Next close your left eye and using the diopter adjustment bring your view into sharp focus Now open both eyes and see if your focus is crystal clear lfthe image is not clearly focused repeat these steps making small adjustments using one focus wheel or the other How can you tell if your focus is correct First of all the view through your binoculars with the diopter adjusted should appear almost threedimensional It should really pop out at you and be crystal clear Also your eyes should not have to work hard when using your binoculars Note lfyou feel a slight strain in your eyes or if using your optics gives you a headache there might be a problem with your binoculars They could be out of alignment Most binocular manufacturers are happy to service their optics lfyou think your binocs have a problem contact the manufacturer and ask about getting your optics serviced Finding the Bird In all my years of birding the one problem I39ve encountered more than any other is the dif culty people have in getting their binocs pointed right at the bird This can be a problem even when the bird is sitting still perched in an obvious place Fortunately this problem can be easily overcome with a bit of practice Here39s how Looking with your naked eyes nd a bright leaf in a distant tree or a certain spot on a distant building and lock you eyes onto it Now without removing your eyes from that spot bring your binoculars up to your eyes and into alignment with your view Did it work V th practice you39ll nd that locking your eyes in place and bringing the binocs into alignment really works This will make it easier for you to nd birds with your binocs even ifa bird is moving Tip When locking your eyes onto a distant bird note some other feature or landmark near the bird39s location This can be a notch in a tree39s outline a brightly colored leaf or even a passing cloud Note where the bird is in relation to this landmark and it gives you another reference point to use when your binoculars swing into place Cleaning Your Binoculars No matter if your binoculars cost 100 or 1000 they will need to be cleaned regularly And cleaning them the wrong way can really damage them Wiping your shirtsleeve across your lenses may seem like the easiest way to get the dust off but you might be putting lots oftiny scratches on the glass or lens coatings Over time these tiny scratches will reduce the clarity of the image your binocs can produce The best way to clean precious optics lenses is 1 Use a soft brush or compressed air to blow away particles dust dirt grit crumbs etc l 0150 Once the particles are removed wet a lens cloth or lens tissue with cleaning solution solution made for use on coated lenses available at camera shops and outdoor stores Softly wipe the lenses with the wet cloth Dry the lenses with a dry portion ofthe lens cloth Hold the binocs up in the light and look for smudges or smears Repeat the wet cleaning as needed


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Amaris Trozzo George Washington University

"I made $350 in just two days after posting my first study guide."

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.