NHM.org


Nature Gardens at NHM: LA's Urban Nature

Showing posts with label : Blog

July 12, 2012

Bird's Nest Fungi, Exploding Eggs, and Mushroom Soup

Yay! Today I documented the first bird's nest fungus, Cyathus sp., in the North Campus. For months, I have been looking forward to finding these fascinating, weird, and wonderful fungi. When North Campus Director Carol Bornstein told me she had found some, I immediately knew I had to blog about them.

Bird's Nest Fungi with my finger for scale.

As you can see, this fungus looks like a miniature bird's nest with oddly flattened eggs in it. Mycologists refer to them fondly as BNFs, bird's nest fungi. The "eggs" (periodoles to be geeky and precise) are actually packages containing thousands and thousands of spores. When a raindrop, or some other drop of water, hits the periodole it causes a miniature explosion. The spores are released and propelled out of the cup (some spores can be projected over six feet in this manner),...

July 6, 2012

What Do Animals Think About Fireworks?

Last night many of us were enjoying the Fourth of July firework displays. Many of our pets were closed up indoors cowering under blankets, hiding under beds, or being generously shut up in bathrooms or garages. But what about the wild animals?

Up to this point in my life, I had never paused to consider how wildlife might react to fireworks. Maybe this is just me, but until I got into work this morning and saw some footage and stills from our camera traps, I had never even stopped to think about it.

Here are the images Sam Easterson sent me:

Did the opossums feel like they were under attack?

Or were they going out to enjoy the show?

Sam said, "The Opossums got really agitated by the sound of the fireworks last night. There were a lot of...

June 29, 2012

Edible Nature

Last week, I collected the first garbanzo bean out of the Erika J. Glazer Family Home Garden. After showing the seed to some of my colleagues, who exclaimed, "Wow, that’s a garbanzo bean," I realized what a profound thing I was holding in my hand. From this tiny package an entire plant can spring, the potential for new life was right there in my hand.
 
Garbanzo bean close-up
To tell you more about this tiny seed I'll pass you over to Vanessa Vobis, one of our Gallery Interpreters that works in the garden.

 
Vanessa stopped working for a quick photo opp.
...

June 22, 2012

Charismatic Microfauna in the North Campus

I've been away all week in Yellowstone for work and wasn't sure how I'd manage the blog this week. While there, I was stunned by the awesome wildlife I encountered, including bison, elk, black bears, pronghorns, mountain goats, bighorn sheep, and even a pack of six gray wolves!

Bison jams are a common occurrence in Yellowstone!

For those in the know, these animals are called charismatic megafauna. They are beloved by most, and therefore it's easy to get people to care about them and the issues they face. In stark contrast, much of the fauna I work with, and a focus of both the North Campus and Nature Lab projects, are tiny, seemingly inconsequential, and many times a turn-off to visitors. For instance, it's hard to get people to care about insects that live in what looks like spit!

This morning I went out to see what charismatic...

June 15, 2012

I Have a Cockroach in My Office!

Last week, Tania Perez, who is on our Museum education staff, found a cockroach crawling on our office wall! Said roach was quickly trapped and contained and was waiting for me when I got back to my office. 

Here in North America we have 55 species of cockroach (there are 3500 total in the world)! Of these 55 species, six in California are considered pests. The American Cockroach is the largest of these six roaches, with individuals reaching a maximum of 2 inches in length. Surprisingly, this roach isn't from America at all. It actually native to Africa. The species is also known as the ship cockroach and has hitched rides on ships traveling from Africa to the U.S. A likely apocryphal story,  it paints the picture in such a way as to imply it was slave ships during the 1600s that inadvertently transported these insects to our shores.

Although this roach is sometimes found in...

June 8, 2012

Another New Bird for Our Bird List

170 and Counting...

Late last week, Kimball Garrett, NHM's Ornithology Collections Manager, spotted a new species for our Exposition Park bird list...drum roll please!

It was an Indigo Bunting, Passerina cyanea. Although Kimball had his camera with him, he was unfortunatley unable to snap a picture. Here is an image of a male Indigo Bunting, so you can at least get a sense of what they look like.

Wow, those are some seriously blue feathers!

 

You can also check out what they sound like from the Fish and Wildlife Service.

If your browser does not support HTML5 audio, you should upgrade. In the meantime, you could listen to it here instead.
 

...


May 31, 2012

Black Rats, Brown Rats, and the Plague

I've been spending a lot of time thinking about rats. Thankfully, it is not because I have a problem in my apartment! Unfortunately, for many people in L.A., rats are a serious pest, and it's not just one type of rat. The most serious rodent offenders in our cities are the brown (aka Norway) rat, Rattus norvegicus, and the black rat, Rattus rattus.
 

What species of rat is this?


Here on the North Campus we have camera trap images and footage of rats hanging out underneath the bridge. But what type of rat is this? Since Jim Dines, our Mammalogy Collections Manager, wasn't available, I decided to try and figure it out myself. Doing a Wikipedia search for brown rats, I came across a nice diagram that helped me to make an identification. What species do you think it is?

 

 

...

May 25, 2012

Kindergartner Finds Greater Yellow Underwing Moth on North Campus

This past weekend the Museum hosted the 26th annual Bug Fair. Over the course of 72 hours, more than 10,000 people visited us. These lucky visitors got to see, do, and taste many things. At Curator of Entomology Brian Brown's table, visitors were able to see the world's smallest fly from Thailand (oh and it just happens to be a brand new species in the genus Euryplatea). On our insect stage, they could meet Western Exterminator's bed bug sniffing dogs. If people were hungry, they could head outside and taste some insectuous delights including Orthopteran Orzo, a la Bug Chef David George Gordon, or wax worm salad prepared by entomophagy expert Dave Gracer. If they were interested in hunting bugs rather than eating them, we also held bug hunts out in the Erica J. Glazer Family Home Garden.

Everyone...

May 17, 2012

Pond Babies: Dragonflies and Diving Beetles

Two weeks ago I told you I'd fill you in when I found dragonfly nymphs in our pond. I wasn't expecting to be able to give you this update so quickly, but SURPRISE, nature moves fast, people! In the last few weeks, I've found more than 50 dragonfly exuviae (the papery exoskeletons shed between molts) attached to the rocks of the pond. Of course, this prompted me to take out my dip net and look for nymphs in the water.

Here's a picture of one I found:

Variegated Meadowhawk, Sympetrum corruptum, nymph
Found May 5, 2012

While I was dipping for the dragonfly nymphs, I found a lot of other macro-invertebrates. The list isn't very long, yet, but includes immature mosquitoes, chironomid midges, mayflies, and predacious diving beetles!

...

May 10, 2012

Who's Visiting the Pond?

On the tails (mammal and bird tails that is) of last week's post, I thought I'd continue to focus your attention on our wonderful new pond. Sam Easterson has set up some of his trusty camera traps next to the waterfall to see who might be visiting the pond. Check out the following images to see what he has found so far.

 

 

 

Nighttime is busy at the pond!

 

 

 

 Stray cat...sorry, there aren't any fish in the pond yet
and no you can't eat them when there are!
...