Category: Natural History Observations Page 12 of 34

Lizards Licking Leaves: Why?

Manuel Leal recently observed this A. stratulus in Puerto Rico licking a leaf high in the forest at El Verde. He describes his observation over at Chipojolab, and suggests that they are not drinking water, and that the behavior is very focused.

Recently in the Bahamas, we observed a female A. sagrei licking a leaf. It hadn’t rained in several days and there wasn’t any dew on the leaves. However, close inspection of the leaf after the leaf left indicated that it was covered with a sticky substance. Perhaps aphid honeydew?

What Goes Around Comes Around: Who’s Eating Curly-Tailed Lizards?

A curly-tailed lizards, sans business end.

We’ve written much about the voracious depredations of curly-tailed lizards on smaller folks, so turnabout’s fair play. But who’s the culprit? Sean Giery provides all the gories over at The Abaco Scientist.

Green Anole Habitat Use When There Are No Brown Anoles

Wake up, green anoles. Spring is on the way.

We’ve had a lot of discussion of perch height in the green anole, A. carolinensis, and whether or not greens shift their habitat use downward in places where brown anoles, A. sagrei, don’t occur. AA’s man in Georgia, Janson Jones, reported last year that he often found greens very near to the ground, even on water plants. It’s a new year, things are warming up, and the greens are getting active. Janson has vowed to keep a close eye on all things anole this year, and a while back he just posted his first report over on Dust Tracks on the Web. Early reports are that the green anoles are messing with our minds again. Let’s see what happens as the summer progresses.

Information Wanted On Three-Legged Lizards

3 legged marsh harbour 2013 clinging dataPeriodically, AA has featured reports on finding three-legged lizards in nature (1,2). And here’s another one, briefly detained on a recent field trip to Abaco. Loss of her hindfoot doesn’t seem to be troubling her too much; heck, she’s even gravid!

Turns out that three-legged lizards pop up all the time. I’ve decided to put together a compilation of the little tricyclers. If you have any information on a three-legged lizard–a photo or more, such as measurements of mass, survival, or sprint performance–I’d love to know about it. Please contact me at jlosos@oeb.harvard.edu.

A Little Giant’s Dewlap… Why Do They Need One?

Anolis ricordii. Photo by Miguel Landestoy.

Anolis ricordii. Photo by Miguel Landestoy.

If a juvenile anole has a dewlap since birth, there must be a reason for it, but what is it?  Juvenile hispaniolan crown giants do have them and here is a video of one using it. This Anolis ricordii was only 52.10 mm in SVL and was showing his stuff while a colleague was taking photos of it. We placed it in the tree and left it for about 10 minutes without disturbing it, after which it started dewlapping and bobbing the head. At one point, the dewlap was fully extended, but by the time I got my “pocket” camera ready, this was all it gave.

httpv://www.youtube.com/watch?v=PZLAvF84Ob4

Later on, another individual, which was somewhat smaller, was found on the ground on a rainy day. There must be intraspecific spatial niche partitioning, when your parents are higher up and could eat you, it must be safer to stay away. Would a dewlap also be useful mainly for “pushing” away potential competitors/predators, as A. cybotes?

Northern House Gecko Eats Biscuit: Video Clips

httpv://www.youtube.com/watch?v=QsOmFYVhS9g

Northern House Gecko eats biscuit !

The Northern House Gecko (Hemidactylus flaviviridis) is a widespread species found in human-modified habitats throughout northern and eastern India. This is probably the most common house-dwelling gecko in Kolkata, the eastern capital of India. This species is primarily insectivorous and often observed to hunt on various insects like ants, mosquitoes or cockroaches. As an altered behavior, it is also not very uncommon to find this species extending it’s food items to available edible human food products! However, there have not been many reported incidents where Northern House Geckos specialized on a certain type of human food.

The video clips here show an individual gecko that ‘waits’ for biscuits everyday almost at the same time in the evening at my home in Kolkata. This individual shows extraordinary ‘pet’ behavior and sometimes eats from my hand. This has been happening since 2011 until very recently.Sometimes the gecko goes missing for a couple of months, but reappears again when we find it waiting for a biscuit near the TV-table, its usual refuge. Though not marked,I assume it to be the same individual as it has very distinctive behavior.

The Anole Bunch-Munch Frenzy

httpv://www.youtube.com/watch?v=R-y5r5kj87M

_MG_4001 copyAfter an early afternoon rain in western Cordillera Central of the Dominican Republic, a swarm of “flying ants” emerged from a nest on ground, most of them gathering at top of this antenna pole, attracting the attention of the neighboring community of anoles. Approximately a “platoon” of 2 dozen of A. chlorocyanus started climbing up the 7-8 meter tall pole, a few A. cybotes stayed low, and at least one A. distichus joined the feast. The lizards came from two small wooden buildings and used the wire (seen near top, at right side) and roof-to-nearest bushes jumps to access the pole. Many more came and went. Certainly, there were several males, and dewlap displays were made once in a while, but there was no time (or no real need?) for a fight this time. Some male chlorocyanus live very close to each other in those buildings (along with several females), and show notorious scars over their faces.

Editor’s Note: Here’s another video that Miguel mentioned in a comment (below):

httpv://www.youtube.com/watch?v=2dxAqySnAVM

Green Anole Creeping And Displaying:The Video

httpv://www.youtube.com/watch?v=R2RXWqiHjhA

Here’s a nice video clip of a green anole (A. carolinensis) creeping along a branch and displaying. To me, it’s a nice reminder that the different ecomorphs not only live in different places, but interact with their environment in very different ways. You’d rarely see a trunk-ground anole, such as A. sagrei, behaving in this manner, but it’s quite typical for trunk-crown anoles.

Invasive Lizards: The Fast Food Chain Connection

Yesterday, we heard a report about red-headed agamas sipping lattes at Starbucks; today, news reaches us that invasive brown anoles in Georgia are munching on Doritos Locos at Taco Bell. Read Janson Jones residential brown anole report at dust tracks on the web.

Another Bad Boy Anole-Eating Lizard Gaining Ground In Florida

Red headed agama in Florida. Photo by John Rahn.

Red headed agama in Florida. Photo by John Rahn.

Anole correspondent John Rahn, of Big Kahuna fame, reports that red-headed agamas are becoming established well beyond Miami. Here’s what he has to say after re-spotting an individual in a Starbucks parking lot that he had previously seen last fall: “I don’t know what he’s eating in that parking lot, but he is HUGE now. My girl at Starbucks says these are all over the place in Jupiter now. He’s survived the fairly cold weather we’ve had, this winter. He is a beauty! Saw another one, same shape, but smaller and very little color.”

AA recently discussed these guys at the Fairchild Botanical Gardens in Miami, and James Stroud suggested that they may have a big and negative effect on anoles, similar to that of curly-tailed lizards. Curlies are also in Jupiter and areas north of Miami–I wonder how these two sun-loving species get along.

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