Thursday, July 23, 2009

Frist Annual Minnesota Chimney Swift Sit

Posted by Kirk
A special event is coming up here at the end of the summer so mark your calendars. Minnesota Audubon is hosting the first ever state-wide Chimney Swift Sit in Minnesota. They plan to make this an annual event so this is your chance to get in on the first event in what will hopefully be a fun new tradition.

This state-wide event will be held at dusk on August 7-9 and September 11-13. The idea is to count chimney swifts as they enter their roosting site for the evening.

According to sit coordinator Ron Windingstad, "The Sit requires spending about one hour at dusk during the periods August 7-9 and September 11-13, 2009 counting swifts as they enter a nighttime roosting place. Volunteers can count on one night or on several nights during the designated period."

The purpose of the Chimney Swift Sit is to gain a better understanding of Chimney Swift distribution and population numbers in the state and also to help preserve structures where they nest. As a special bonus, everyone who enters a report is entered into a drawing for a prize!

This event is part of the National Swift Night Out organized by the Driftwood Wildlife Association. These are the same people who bring us those awesome Chimney Swift migration maps each spring.

Audubon is asking for help in two ways. First off, volunteer to be a counter! Second, even if you can't partake in the actual counting for this citizen science project you can help out by letting Audubon know about roosting sites so they can send another volunteer to count. If you know of roosting sites you can contact Ron Windingstad at rwindingstad@audubon.org.

To find out more about the Sit and to download the necessary forms, check out the Chimney Swift Sit page at Minnesota Audubon.

~Kirk

(photo credit: NPS)
Read More

Wednesday, July 22, 2009

Recycled Boats

Posted by Kirk
Earlier this month I posted about the Plastiki. They've now launched a new website about the expedition. At first I was a little dismayed that the flash-based site took so long to load and then I discovered why. This is a seriously flash intensive website and it is impressive. I have yet to fully dig through all the info on the site. This is probably a look at the future of what a lot of websites will look like and I applaud their effort.

I know from my wife being a web designer that one of the challenges in having a heavily image and flash based site is that the search engines have a really difficult time figuring out what the site is all about and it can hurt your rankings and the cataloging of the site. I hope some smart people are working on improving that because websites like this are gorgeous and I hope to see more of them.

On a closer to home note, if you're interested in building boats out of reused plastic bottles why not check out the Twin Cities' very own recycled boat race, the Aquatennial Milk Carton Race was held last Sunday. Here's a video from back in 2007. The milk cartons may be reused but the clip of them feeding a boat into a garbage truck at the end shows that this race is more about making boats out of milk cartons than being environmentally responsible.



For a sweet view of why being a naturalist in the twin cities is so awesome check out this 365 degree panoramic image of the milk carton race held at Lake Calhoun. How many major cities have beautiful kettle lakes like this within the city limits?

~Kirk
Read More

Tuesday, July 21, 2009

Rain Barrel Sale

Posted by Kirk

Now that we finally are getting some rain it doesn't seem quite so crazy to have a rain barrel. Up until this week it would have been bone dry. Residents of the Twin Cities take note, you can now buy a rain barrel at a reduced cost through the Recycling Association of Minnesota. All rain barrels must be ordered by July 27th so there are only a few days left to get in on this deal. You can order online. The cost is $65 which is a great deal for these barrels which usually run $115. Rain barrels must be picked up August 14 or 15th in Minnetonka.

Why use a rain barrel? Some people push the idea that it is to save money. The barrel is on sale for $65. The water out of the spigot costs $2.91 per unit in Minneapolis, even less in St. Paul. If you use twenty-two and a half units of water from the barrel, it has paid for itself since 22.5 x $2.91 is $65.48! Great right? It seems that way until you consider how much water 23 units is. A unit of water is 748 gallons. That means you have to use 17,204 gallons of water from your rain barrel before it pays for itself. That's a LOT of water. The average sprinkler uses 240 gallons per hour. If you water your lawn once a week you'll use 17,204 gallons in 71 weeks. There are only 20 weeks in the summer so 3.5 years to use that much.

In reality, most people aren't watering their lawns with rain barrels, there isn't enough water pressure to run a sprinkler. Rain barrels are usually used for incidental watering in the garden. If this is the case, and you're using five gallons here or there it will take longer than the barrel will last to pay it off. Ten gallons a week would take you 86 years to pay off the barrel.

There must be another reason to use them and here it is. Rain barrels save water.

If many people use rain barrels it avoids water shortages and this is a good thing for the environment. What you need to decide is can you spend a little extra to help the environment?

~Kirk
Read More

Phoebe Fledging

Posted by Kirk
While eating lunch today I sat next to the screen that shows our live feed of the phoebe nest on the building. I noticed there were only two phoebes. There were three this morning. We were expecting them to fledge any time now. While I watched, one of the birds left so I ran over to the computer and started recording video. I managed to capture the last phoebe fledging from the nest.



You can see a fecal sac left in the nest. Interestingly a parent came back a few minuted later and took it out. While I watched, parents came back to the nest several times with food. Maybe it was each of the parents coming back to make sure everyone was out.

~Kirk
Read More

Monday, July 20, 2009

South Dakota Road Trip

Posted by Kirk
Twin Cities Naturalist on the road! I spent last week in South Dakota. It was a family reunion trip for my wife' side of the family. All birding and natural history behavior thus had to be done in little stolen moments or while careening down the highway at 75 mph in a rented minivan. While I didn't return with a multitude of new western bird species sighted I did make some nice observations and saw a few lifers.

Our first stop was Doland, SD. Aside from numerous mourning doves and house sparrows, there were some other birds hanging out at the edge of town. I quickly spotted a kingbird but even without my binoculars I could see the white stripe on the tail indicating that it was an Eastern Kingbird. I see the Eastern pretty much every day on my way to work. I was hoping to spot a Western Kingbird. I thought maybe we weren't far enough west. Realizing I had a few minutes while my son napped, I went inside to get my binoculars and camera. I was glad I did! The Eastern Kingbird was gone but it was replaced with a beautiful Western Kingbird just a short distance away.

It stuck around for the two days we were there so it much have been nesting nearby. The Western Kingbird was a lifer for me.

I walked along a row of trees and saw a bird fly in and land. When I put up my binos I was rewarded with not only an American Robin but an Orchard Oriole. We have Orchard Orioles at home and we band them once or twice a year at work but I have never stumbled into one in the wild so this was a lifer for me as well.

Here's a photo of the Orchard Oriole sitting next to the American Robin for comparison. The Orchard Oriole is smaller than a Baltimore Oriole. It's also brick red instead of bright orange. Another difference is that the tail is all black whereas a Baltimore Oriole also has some orange on the tail.


I also saw this Brown Thrasher in the same area. This would have been a lifer last year. For a while this was a nemesis bird of mine. I could never find them. Now, for whatever reason, I've seen something like three or four of them this year.


While doing a little yard birding I heard a Western Meadowlark and followed the sound out to the road where he was perched on a power line. He was facing away from me so I didn't get any good photos. Out on the road it was fun watching the Western Kingbirds chase the Killdeer. There were numerous killdeer around and the kingbird would chase after them if they flew under the powerline he was sitting on. I snapped a few photos of the pursuit, this was the only one that came out. They were moving really fast. You can see the bottom of the city's population sign, "Pop. 297" There are probably more birds than people. Heck, there are probably more house sparrows than people.


We pushed on a few days later to the black hills for the family reunion. We narrowly avoided a forming tornado along the way. I had my eye on this storm cell for a while and as we drew closer I could see this interesting looking area on the tail end of the storm. When we got closer I could see little tendrils spiraling down out of this area. They would form and disappear pretty quick so I didn't catch them in photos very well. Luckily we were traveling perpendicular to the storm at 75 mph and we cleared the area without so much as a drop of water on the windshield.

There wasn't really any time for birding when we reached the Black Hills but I did manage to see a Spotted Towhee outside the entrance to Sitting Bull's Crystal Caverns and a number of these gorgeous Mountain Bluebirds at the Rushmore Shadows Resort.


~Kirk
Read More

Friday, July 10, 2009

Lifer Wren

Posted by Kirk 3 Comments
While teaching my Digital Nature Photography camp today I took the kids to a spot where we'd been earlier in the week. One of the girl's camera batteries had died right when we got there last time so she really wanted to go back. Boy am I glad we did.

While the kids hunted around for flowers and dragonflies, a sound caught my ear. A bird was calling from within some tall grasses near a large pond but I couldn't see anything. It seemed to call with no regard to the kids. I could tell it was close so I stepped off the trail and into the grass to see if I could make anything out. There was nothing but the calling of the bird. I walked a little further in and suddenly a bird flushed up out of the grass about ten feet from me. I only caught a glimpse as it immediately popped back down into the grasses further away and resumed singing. I knew this was not a song I had heard before. It started with two notes and then ended with a faster trill of sorts. I tried to commit it to memory before rounding up the kids for lunch.

Back at the nature center I listened to a few guesses online at lunch. None were a match. I then tried another guess. I played the call of the Sedge Wren. Bingo. That was it! "Wait a minute," I thought. When I was in this same spot on Tuesday with the kids I saw a small wren in a shrub just a few feet from where this bird had been. I'd been too busy this week to go back and look at my photos. I scrolled back through the photos and sure enough, the bird I'd photographed at the beginning of the week was a Sedge Wren! It was fun to get photos since they usually spend most of their time hiding in grass. This was the first sedge wren I've ever seen so that made it even more fun.




~Kirk
Read More

Thursday, July 9, 2009

Dragonflies of July

Posted by Kirk
I've not been posting to the blog as much this summer as I've been super busy. This week I'm teaching a digital nature photography camp. Of course, I've had my camera with me while out with the kids and I've had some time to snap a few photos.

I only have time for names in the captions so here goes. Here's most of the dragonfly species I saw and photographed this week.

Eastern Pondhawk Erythemis simplicicollis (female)


Four-spotted Skimmer Libellula quadrimaculata


Widow Skimmer Libellula luctuosa (female)


Widow Skimmer Libellula luctuosa (male)


Twelve-spotted Skimmer Libellula pulchella (male)


Blue Dasher Pachydiplax longipennis (male)


Blue Dasher Pachydiplax longipennis (female)


Dot-tailed Whiteface Leucorrhinia intacta (male)


Common Whitetail Plathemis lydia (male)


Common Whitetail Plathemis lydia (female)


Halloween Pennant Celithemis eponina


Calico Pennant Celithemis elisa

This last one isn't a dragonfly, it is a damselfly. The main differences you can easily see in the field are a smaller slimmer body and a different wing posture when at rest. Dragonflies rest with wings outstretched while damselflies fold their wings in along their body.

Familiar Bluet Enallagma civile


~Kirk
Read More

Wednesday, July 8, 2009

Plastiki

Posted by Kirk
MSNBC has a great story up about the Plastiki.

The Plastiki is a boat made completely out of recycled and reused plastic bottles. The name is a reference to the Kon-tiki made famous by Thor Heyerdahl who sailed across the Pacific in a similar voyage in 1947. I've visited the Kon Tiki museum in Norway twice and it is quite interesting.



The Plastiki is a project of explorer David de Rothschild. It will sail from California to Australia, an 11,000 mile journey, to raise awareness of the dangers of living in a disposable society. The daughter of Thor Heyerdahl, Josian Heyerdahl, will join the vessel on part of the journey.

This reminded me of this crazy story about a guy looking to build his own island out of used plastic bottles. Sure enough. Here's the story. There's also a video about the guy when he was on Ripley's Believe it or Not.


Read More

Thursday, July 2, 2009

4th of July Buzz Kill

Posted by Kirk
I just read this newsweek article about the environmental impacts of fireworks and while it is interesting it i also a real buzz kill. I love fireworks. Turns out all those perchlorates used as oxidizers in fireworks are toxic.
A recent study of lake water in Ada, Okla., before and after annual fireworks displays found that the perchlorate concentration in the water increased by up to a factor of 1,000 in the hours after the show, exceeding several states' maximum allowable levels for drinking water. The levels took between 20 and 80 days to return to normal.
This is particularly interesting since so many firework displays are over water. Perchlorate is especially dangerous to developing fetuses and eating fish from these waters may be dangerous. Also present in fireworks are various heavy metals including barium used to make the green colors. I won't recap the whole article but it goes on to talk about greener fireworks that burn cleaner and as a result they actually look brighter because they produce less smoke. Unfortunately, the greener fireworks cost more money and the cheap fireworks produced in China are winning the day.

~Kirk
Read More

Wednesday, July 1, 2009

To the Bat Cave!

Posted by Kirk
This past year an eagle scout put up a bunch of new bat boxes at the nature center where I work. We're still waiting for the bats to discover them but there are bats aplenty on site. They find any small space on the side of the building to wedge into.

We try to do all we can to encourage bats to take up residence on site as they do a great job eating mosquitoes and flies. With the great benefit they are in mind, I'm watching the white nose syndrome story closely as I would hate to lose our little flying mice. If you haven't heard about this awful problem facing bats read more. This strange disease is wiping out bat populations.

Little Brown Bats with White Nose Syndrome
Photo Credit: New York Department of Environmental Conservation

Bats are an important part of our ecosystem and we need to conserve them. Putting up a bat house is a great way. The best designs are those from Bat Conservation International. I recommend a nursery box. Single chamber roosting boxes are okay but won't really help beef up the bat population on your property.

If you're a person prone to excess and you have the means, why not build your own bat cave?

~Kirk
Read More