Gleanings of the Week Ending July 1, 2017

The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

Carbon in Atmosphere is Rising, Even as Emissions Stabilize – Are the carbon sinks less able to function as CO2 levels have risen? Still TBD. There is still a lot to understand about our planet and the impact of higher and higher greenhouse gases in the atmosphere.

Cats Domesticated Themselves, Ancient DNA Shows – Cat came into settlements on their own…enjoying the bounty of rodents human settlements contained. They didn’t give up their wild natures to the extent that dogs and other domesticated animals did. There is genetic evidence that they’ve remained largely unchanged for 1000s of years.

Not so pearly whites – Evidence of a filled dental cavity in a 13,000 year old hunter-gather tooth!

43 Incredible Photos of US UNESCO Sites: Present and Proposed – I was surprised that I had visited so many of these places (the ones in the continental US).

Plastic Pollutants Pervade Water and Land  and Microplastics sloughed from synthetic fabrics in the washing machine - Plastics are everywhere in our environment and their  negative impact is probably greater than we realize…but it is surprising how much we don’t know.

In the AI Age, being ‘Smart’ Will Mean Something Completely Different – The author proposes that the new definition of ‘smart’ will be about the quality of thinking, listening, relating, collaboration, and learning…not about the quantity of factoids we remember. It won’t be easy to be the new kind of smart and I often wonder if the way we use current technology has moved us in the opposite direction.

American Icon in the Alaskan Horizon – Birds at the Chilkat Bald Eagle Preserve in Alaska…in snow and ice.

11 Very Different Types of Photography that Each Illuminate Our World – A little eye candy for the week…and a survey of types of photography.

Mars rover Opportunity on walkabout near rim – One of my daughter’s first jobs as an undergraduate student was calibrating images coming from Opportunity…so I always take note when articles come out of it.

Mapping the potential climate effects of climate change – I look at these types of articles and try to understand the assumptions that are being made. It always seems that there are still a lot of unknowns….and it could be different and worse than they projections. Basically north and west seem to fare better than the south where it is already hot and often dry.

Ten Little Celebrations – May 2017

May was a busier month than April and the change from cold to warm weather still provides a lot of variety…plenty to celebrate.

“Focus on Butterflies” session at Brookside Gardens. Our experience with a photography specific time in the Brookside conservatory with butterflies was very enjoyable. I’m still celebrating the images I managed to capture.

Conowingo. Every time we go it is a celebration that Bald Eagles have recovered from their near extinction from pesticides. We see so many at Conowingo --- along with Great Blue Herons and cormorants.

Hiking with second graders. I thoroughly enjoy the ‘Science of Soil’ hikes with second graders. It seems like every group is excited about the topic…and being outdoors in general!

Two pre-school Nature Tales field trips in one day. Even though it rained all day – both the morning and afternoon group of pre-schoolers enjoyed their field trip. My segment (which I repeated 5 times!) was about trees and butterflies. Their celebration of walking to the nature center in the rain with their boots and rain gear was contagious!

TSA Pre. Every time I see that my boarding pass has ‘TSA Pre’ results in a little celebration. It is such a relief to not have to pack so I can get my laptop and quart sized Ziploc out easily…or wear slip on shoes that can come off…and back on easily.

Family. This month I saw more of my mother’s side of the family than I have in a long time. They are getting older so every time I see them together, it’s cause for celebration.

A lull before a flurry of busy days. With all the travel going on in the last half of the month, I celebrated a day that was a calm beforehand.

Setting up the Monarch Nursery. I thought my strategy to bring Monarch Butterfly caterpillars inside so that I could gradually take the milkweed plants out of the front flowerbed was a good one – and I celebrated when I found most of what I needed in the basement. My first caterpillar seemed to be doing well…but I put him back outside on the milkweed when I left on my travels. I’ll start a nursery again when I am going to be around to give them fresh leaves every day or so.

Wood Ducks as the Neighborhood Pond. Our neighborhood looked so terrible after they cleaned it out….but the wood ducks came anyway. I celebrated their visit.

Skirts. I’ve gotten skirts out again and am celebrating how great they are to wear when the weather is warmer.

Conowingo – May 2017

We had more success at Conowingo in May than we did back in April although we first got there – all I saw were cormorants in the water.

There were no vultures on the high reaches of the dam or birds sitting on the big towers.  It was very windy and I eventually started looking lower on the rocks across the river from our vantage point. It’s a little far away for pictures…but that’s where the birds were. The first group I saw included a Great Blue Heron and some pigeons (the pigeons are usually all over the dam but seemed to prefer the rocks on the windy day).

I started taking pictures of all the rocks. How many eagles do you see in this pictures (remember the immature eagles don’t have white heads and tail feather yet)?

I count 7 Bald Eagles…and a Great Blue Heron and a Cormorant.

Eventually I saw an eagle on one of the towers

And then thought to zoom in to the platform of the tower after remembering someone commenting last month that there was a nest on one of the towers. Sure enough – it looks like there is. Hopefully no one will have to go up there until the eagles are done with the nest for the season.

I took a few none bird pictures as well. This spider web was somewhat damaged by the wind but I was pleased my camera would focus on it. The spider jumped from the web to me while it got the picture! Fortunately, I noticed and managed to get the critter to the ground somewhat close to the web.

I photographed the flowers of the Princess Tree that is growing on the cliff that is across the parking lot from the bird viewing area. These invasive trees are easy to spot this time of year because of the color of the flowers. They grow very fast….and the seeds are dispersed so I seem to see more of them every year.

National Aviary – Pittsburgh

We got to the National Aviary in Pittsburgh just after it opened at 10 AM....early enough to find parking very easily in the aviary’s parking lot. It was a good outing on a cold day just as the Phipps Conservatory had been the day before. A few of the exhibits are birds in large cages or enclosures but most the birds are in open areas and sometimes they will walk right up to where you are standing on the walk. It makes taking pictures a lot easier.  I developed a strategy for causing my camera to autofocus on the bird rather than the wire mesh or smudged glass (pick birds further from the wire mesh, point the camera at something else that was about the distance to the bird…then go back to the bird). The snowy owl in the slide show below was photographed using that technique. All the birds were inside except for the snowy owl, bald eagle, and Andean Condor (near the end of the slide show).

Something l learned that surprised me was about penguin’s beaks. They get furrows in them starting at the part closest to the head and extending further toward the tip as they older. This is an old penguin!

Gleanings of the Week Ending March 4, 2017

The items below were ‘the cream’ of the articles and websites I found this past week. Click on the light green text to look at the article.

A tale of four skulls: what human bones reveal about cities – History from a different perspective!

I spent a week exploring how we’ll have to live in a post-water America – We often take water for granted – turn on the faucet and it comes out. This article was about taking a different perspective and might be a shift in thinking we’ll be required to make in the future.

New map highlights bee population declines across the US – Not good. The declines are occurring in key agricultural regions.

10 Must-see Sites of Iran’s Historical Architecture – There are 20 UNESO World Heritage Sites in Iran. Too bad that part of the world is not a safer travel destination. Enjoy the pictures!

Our Water on Drugs – Treatment of water started out focused on sewage…then expanded to include nitrogen and phosphorous. Now the residues of drugs and personal care products are becoming a concern.

Popular heartburn drugs linked to gradual yet ‘silent’ kidney damage – Proton pump inhibitors (like Prevacid, Prilosec, Nexium and Protonix) taken over prolonged periods can have significant risks.

Cocoa, Caffeinated ‘Black Drink’ was Widespread in Pre-Contact Southwest – A ‘caffeine trade network’ brought cocoa and yaupon holly to the southwest….and the residue from the drinks are found in pottery. One of the first analyzed was from Chaco Canyon!

The Country’s Most Famous Bald Eagle Pair Just Laid Another Egg – The Bald Eagles at the US National Arboretum are keeping 2 eggs warm! See them on the nest cam.

6,600 spills from fracking in just four states – Drilling down on the stats – 26% in Colorado and 53% in North Dakota occur at wells that experienced more than one spill…the industry should be using this data reduce the risks of additional spills.

New Discoveries from Cahokia’s ‘Beaded Burial’ May Rewrite Story of Ancient American City – Some of the ‘men’ buried in an elite grave excavated in 1967 were women based on a new evaluation of the skeletons!

Disappointment at Conowingo

The weather was a little warmer than usual when we made our trek to Conowingo last week. The weather turned out to be the best part. The eagles must have finished their breakfast by the time we got there and were not very active; this was the best picture I got – from all the way across the river. You can tell that those rocks are favorite perches (all the ‘white’).

The black vultures were not very photogenic either. The big grouping that usually eyeballs cars going over the dam from a fence only numbered three birds. The others must have been out and about – maybe at some substantial carrion site.

At first I thought the cormorants would redeem the trip. There were at least two of them and they were within photographic range. But then I realized that the reason they were staying in one location was a tangled (and trashed) fishing lure rather than a fish (you can see it (light green) and the line that evidently snagged it to the rocky bottom in the middle picture below).

There were a few gulls about. I tried taking pictures of them as they landed or flew up from the water. The one with the orange spot on the bill is a Herring Gull. The other one could be a Ring-billed Gull since the beak looks like it has black instead of orange toward the end.

There were two Canadian Geese in the shallows on the other side of the dam abutment – almost out of camera range.

The same was true for a flock of pigeons. They usual are on the dam structure but they must have been startled by something because a large number left the dam at the same time and moved to the rocks.

On a botanical note – the Princess tree buds still look the same as they did last time we were at Conowingo. The buds on the tulip poplars (at the end of the twigs) seem to be getting larger.

On the way home, I took a picture of the mounds of salt along I-95 near the tunnel (through a dirty window). Generally the salt piles are significantly reduced by this time of year….but not this season. I wonder what will happen to it since the salt storage buildings are probably already full.