May Photography Workshops Scheduled

I recently scheduled two photography workshops for the month of May. Many of you expressed interest in upcoming workshops so I wanted to let you know about them. Both workshops are very limited in terms of number of participants since I want to ensure everyone gets the individualized attention they deserve. This also means though that they fill up really quickly.

May 5th, 2012 – Moving Away from Auto

This workshop is designed to get you moving away from shooting in the auto function to allow you to be in control of your camera. With the gained knowledge in this workshop  your creativity can take off and you can create the images you desire. This workshop is appropriate for people who have recently purchased their cameras and are ready to move to the next step or for people who are ready to make the leap into the manual modes of your camera. Limited to 4 participants. Full Details

May 11th and 12th, 2012 – Taking Your Images to the Next Level

This workshop is designed to get you to make pictures not just take them. We will cover a range of topics and will stress the importance of making conscious decisions about what picture you are trying to achieve and changing your camera settings to get those results. This workshop is appropriate for people who know basic camera functions but are looking to improve their picture quality. Limited to 8 participants. Full Details

Finally, feel free to message me back if neither of these workshops suits you and why. If I get enough of a response with common interests/needs that are different from the above I will try to arrange a workshop that fits those requests. Also, check back since I will be scheduling more workshops in the future.

Read more.. Monday, March 26th, 2012

Project Puma: Differentiating Sex by Genital Spots

This is one of those cases where I realize how little I know and how little experience I have in regards to Mountain Lions. I am sure an experienced puma biologists could look at the picture below and say, duh, that’s a male, or duh, that’s a female…well even after doing some more research I once again have no clue.

Mountain Lion Rear View

Mountain Lion Rear View Close Up

From Ken Logan and Linda Sweanor’s 2001 “Determining the Sex of Treed Cougars“:

“Male adult and subadult cats have a conspicuous black spot of hair, about 1 inch (2.5 cm) in diameter surrounding the opening to the penis sheath behind the hind legs and about 4 inches (10 cm) below the anus. The anus is usually hidden by the base of the tail. In between the anus and black spot is the scrotum, which is covered with light to dark brown hair and will usually appear as another dark spot.”

“Female adult and subadult cats do not have this conspicuous black spot of hair. The area is entirely covered in white hair. The anus is directly below the base of the tail and the vulva is directly underneath the anus. Both the anus and the vulva will usually be hidden by the base of the tail.”

So my guess would be female, but then there is that little amount of dark hair just to the left of the tail, but is that too close to the anus. What do you think?

Note: This image was taken two weeks (almost down to the minute) after the second image from the Aptos Mountain Lion Characters Post

Read more.. Monday, April 25th, 2011

Project Puma: Prey Selection

I found this video on youtube recently. Its quite amazing what the guy captured and it provides an interesting example of mountain lion prey selection. Researchers have found that in most cases a mountain lion has to have eaten a prey animal (most likely as a dependent kitten) before they think of it as potential prey (I am assuming this is smell based). This may be like the learning behavior of ‘problem’ black bears which teach their cubs that garbage is a meal leading to human conflict. This cougar had no interest in the sheep (a seemingly much easier meal) but was fixated on the deer way further away. It’s mother had probably never hunted sheep herself therefor this puma didn’t think of them as prey either.

The counter-argument of course is that in some cases mountain lions attack people, something the mother most likely did not do. In twelve of the fifteen cases where cats were killed after attacking humans the cats were underweight or sick so the mountain lions seemed to be desperate.

Note: at the end of the video the guy says “I wonder if I should have shot him” something I strongly disagree with!

Read more.. Friday, April 22nd, 2011

Project Puma: Aptos Mountain Lion Characters

As many of you have noticed I am completely and utterly fascinated by mountain lions, pumas, cougars, catamounts, or what ever you like to call them (did the webpage url and logo give that away???). It has always been my fascination getting pictures of them and seeing them in the wild. Though i have been able to get images, I have never seen one in nature (how is that possible you ask — camera traps!).

As anyone with any obsession, I can’t get enough information about them. Absolutely everything interests me about them including home range size, territoriality, density, prey species, den sites, when cubs leave their mother’s home range, and the list just keeps going on. I am telling you this as a forewarning for future posts under the Project Puma heading that will have anything and everything to do with mountain lions whether that is information or pictures just in case there is someone else as interested in this beautiful cat as I am.

This post is also supposed to serve as an introduction to the cat(s) of the area I camera trap in Aptos near Santa Cruz in the Monterey Bay area. As of right now there are two camera traps out there and I have gotten mountain lion pictures on three different occasions. I am not completely sure whether it is the same cat or different cats so I figured I’d ask you guys. Here are the three pictures followed by close-ups in the same order.

Taken on June 8th, 2010 at 4:35am

Taken December 25, 2010 at 9:31pm

Taken March 5th, 2011 at 6:32am

Is it all the same cat, I really don’t know. In other cat species researchers use the spotting pattern which is unique to each cat to identify them. For Puma concolor (the scientific name of the mountain lion meaning cat of one color) this isn’t really an option. What I was looking at is the black marking around the mouth, the black whisker markings, and the shape of the ears. Nothing leads me to say that its the same cat or different cats (in the second image, that is a tick in the ear, sadly not something to identify the cat by) — do you see something I am not? One thing for sure is that the second cat is much bulkier than the first, but the images were also captured months apart.

An interesting thing to note are the few faint slightly darker spots on the back leg of the first image, which could give us some clues of its age. Puma kittens are completely spotted loosing these marks as they become older. By ten months, the markings are difficult to see except on the hindquarters. The eyes turn from a light blue as kittens to yellow brown as adults (this change is complete by sixteen months). Young pumas are independent around 15 months (with a range of 10 to 18 months) leaving their mother’s territory and searching for their own. Based on the fact that I had not captured an image of a puma before this individual (for a period of 8 months) and its morphology it leads me to believe that this must be a juvenile looking for its own territory. If the second and third image are of the same cat, then I am glad to know its doing well in its new home!

Read more.. Thursday, April 21st, 2011
Get Adobe Flash playerPlugin by wpburn.com wordpress themes