Search This Blog
Sunday, April 30, 2023
Saturday, April 29, 2023
Thursday, April 27, 2023
Feeding Pandas, Starving Trolls
Wednesday, April 26, 2023
Larger Than Life
Monday, April 24, 2023
Species Fact Profile: Allen's Swamp Monkey (Allenopithecus nigroviridis)
Allen's Swamp Monkey
Allenopithecus nigroviridis (Pocock, 1907)
- Body length 45 centimeters with an additional 45-50 centimeters of tail. Weigh 3.4-5.9 kilograms, with males being notably larger than females. The body is stout. The fingers and toes are partially webbed (juveniles tend to more aquatic than adults)
- Fur is a mixture of brown, green, and gray with black bands and golden flecks, notably longer around the neck and shoulders. Underbelly is white. The face is black with a reddish chin, with long bundles of hair at the cheeks
- Active by day. Spends much of its time in the trees, but comes to the ground to feed. Good swimmer, capable of diving to avoid danger (sleep beside and over water as an anti-predator defense system)
- Primarily foraging on the ground. Food items can be stored in cheek pouches (will sometimes rob each other’s pouches). They will also enter water for forage for fish and small aquatic invertebrates (shrimp, snails) in the shallows
- Some tool use demonstrated – one zoo specimen threw hay on the surface of the water to create a shadow, which would attract fish that he would then seize and eat
- Predators include raptorial birds such as crowned eagles, large snakes, and bonobos.
- Vocalizations include a high chirp as an alarm, a long squeal of excitement, and a deep gobble from males, thought to be territorial. Threats consist of stares and teeth displays
- Have been observed casually socializing with and foraging alongside other guenons, such as Wolf’s guenon and Schmidt’s red-tailed guenon, as well as black mangabey and talapoin, but do not seem to go out of their way to facilitate such interactions. One report of a hybrid produced in captivity with a male Allen’s swamp monkey, female vervet
- Species and genus are named after American zoologist Joel Asaph Allen. It is the only member of the genus Allenopithecus (“Allen’s Monkey”), which differs from the closely related guenons in both its dentition and its habits, as well as by having fewer (48) chromosomes. Species name refers to greenish highlights in fur
- Population believed to be decreasing, though apparently abundant in some protected areas). Primary threat is hunting for the bush-meat trade. Also sometimes killed in retaliation for crop raiding or captured for the pet trade. All of this is facilitated by logging, which increases human access to their habitat. Habitat loss itself is not a major threat to this species, as their preferred habitats are very swampy and unsuitable for logging or for agriculture
Sunday, April 23, 2023
In Sync
Friday, April 21, 2023
The Zoo-Files
The zoo is also supposed to be really old and hard up for cash, which explains why there are no funds to get partners for the animals to breed with. We are constantly seeing big cats, for example, in what are travel crates, but are presumably their cages. The elephant enclosure is the size of my bathroom, and about as naturalistic. Then, we have a scene at the zoo's conference room, which has an entire wall taken up by a view into a tank of beluga whales. Ok, I can see a few places where maybe we could have started to trim expenses a little...
Thursday, April 20, 2023
From the News: Reintroduction of the Micronesian Kingfisher
The U.S. Fish and Wildlife Service has announced the publication of the final rule establishing a nonessential experimental population of sihek (Guam kingfisher) on Palmyra Atoll, which is co-managed by The Nature Conservancy and the Service.
Under section 10(j) of the Endangered Species Act, captive-bred sihek will be released to Palmyra Atoll as an experimental population in an effort to support the reintroduction of the at-risk species and foster long-term recovery.
Tuesday, April 18, 2023
ROCKabye Baby
Monday, April 17, 2023
Not Worthless, But Priceless
Happy Volunteer Appreciation Week! Volunteers are an integral part of many zoo and aquarium staffs, providing support in a variety of roles, such as animal care, education, and guest services. Without all that they contribute, zoos would be far less capable of delivering on their missions of conservation, education, and recreation to the public. Thanks again!
Saturday, April 15, 2023
Sporcle Quiz: Sporcle at the Zoo - Gorilla
It's been quite a while since we've had a new entry in our Sporcle at the Zoo series, so enjoy this new quiz about gorillas!
Friday, April 14, 2023
Spoiled by the Zoo
This year, I decided that I was going to take more time to engage in wildlife watching. Every trip I take, especially outside of my state, I try to tack on a little time for birdwatching or over chances to see wildlife. I set myself up a little travel bag with my binoculars, camera, field guide, and notebook. I was all set to enjoy my reentry into the world of amateur nature study.
My one take away - man, working in a zoo has left me spoiled.
I spend a lot of time looking and fields or patches of woodland and not finding anything. Or, even more frustrating, getting quick glimpses of wildlife (sometimes just a sound) that vanishes before I can get more than a glimpse, let alone an ID. When I do see wildlife, it really is the same handful of species over and over again - my life-list is largely untouched since I began. It makes me feel a little dumb sometimes, because, duh, this is the wild. That's how it works. In a society that is often geared towards instant satisfaction, I can perhaps understand why so many folks don't have the patience for this sort of thing.
Zoos aren't the only thing which skews perspective. Nature documentaries are full of wildlife encounters - seldom showing how many hundreds of hours those filmmakers spent filming nothing while waiting for that brief burst of drama that David Attenborough will narrate. Natural history museum dioramas have have dozens of species crammed together shoulder-to-shoulder to a degree that they wouldn't tolerate in a zoo, certainly not in the wild.
None of this is really a complaint, per se - just a reflection on how much working in a zoo has, to a degree, skewed my thought process as to what seeing animals in the wild is like. They aren't just *there* waiting for you, all easy to see and observe. They're unpredictable, cryptic, and constantly on the move. And there sure as heck aren't any identification plaques.
The natural world is real, and that's what makes it beautiful. I sometimes worry that when we create media that manages people's expectations in a way that makes it look much busier and more diverse than it realistically ever would be, we can do it a disservice. I would worry about it resulting in people looking at the real, natural world and thinking that there's no wildlife there, nothing to save, and therefore not worthy of attention and protection.
Wednesday, April 12, 2023
Zoo Review: Chattanooga Zoo at Warner Park, Part II
Continuing with the tour of Chattanooga Zoo at Warner Park, we come to native section.
Situated along the Tennessee River, Chattanooga has a long history as a transportation hub, both by river and by rail. The history of the later is celebrated in Walkin' the Tracks, a train-track themed exploration of Tennessee's wildlife (with a few outliers, like prairie dogs). White-tailed deer, wild turkey, and coyotes are among the species hat can be seen here. The theming is especially prominent in the Cougar Express (someone had fun coming up with that name, I'm sure), a train car which serves as a viewing building for the zoo's mountain lion exhibit. The train car also serves as an education center with graphics about the most wide-spread cat of the Americas. I was struck by the similarity of this exhibit to a very similar set up I saw years ago at Elmwood Park Zoo in Pennsylvania, that one focused on American bison.
Chattanooga proved to be a much more expansive zoo than I expected; I thought I'd actually be done at this point, before then coming across the Deserts and Forests buildings, a complex of two animal houses that hold the reptile, amphibian, and small mammal collection. The buildings are fairly similar to one another, roughly circular in shape with small exhibits on the periphery, a larger central exhibit in each one. I was surprised by the variety of species seen here, with the reptiles including pancake tortoise, desert horned lizard, and bushmaster. Mammals were also well-represented with meerkats, rock hyrax, genet, and a very small naked mole-rat colony, among other species. The walkway between the two buildings passes an outdoor habitat for Komodo dragon.
The final geographic area of the zoo is Corcovdo Jungle, which displays animals from Latin America. A subsection of this area is La Selva Amazonica, a pavilion with indoor and outdoor habitats for several species of tamarins and marmosets; this was perhaps the greatest number of species of these small primates that I'd seen in a zoo for quite some time, especially in a zoo this small. Nearby is grassy habitat for giant anteaters, with the path then looping down a winding trail past black-handed spider monkeys, prehensile-tailed porcupine, capybara, and jaguar. I was especially surprised by the exhibit for kinkajou; not that I saw the animal, but these small, nocturnal mammals are often just kept as educational ambassadors, and it was a nice surprise to see a well-furnished exhibit for this species, as opposed to the off-exhibit holding I more often associate them with.
Chattanooga Zoo has expanded its footprint rapidly in recent years, with ambitious plans for more exhibits in progress. Recent years have seen considerable renovations and improvements. It lacks many of the "ABC" animals that many visitors go to zoos in search of - bears, rhinos, zebras - but still has a diverse, well-rounded collection. Better to have a smaller collection that the facility can manage than to cram in as much megafauna as possible, as other facilities have tried. Some of the exhibits (particularly some of the smaller ones, such as the raptor displays along Walkin' the Tracks) were not particularly impressive, but I don't know if I can say I saw anything truly bad.
There is quality work going on behind the scenes as well. The zoo is small but still manages a substantial conservation involvement, as well as participation in local wildlife rehabilitation programs. All in all, Chattanooga is an enjoyable little zoo, easily paired with the Tennessee Aquarium for a full day of quality time among interesting animals.
Tuesday, April 11, 2023
Zoo Review: Chattanooga Zoo at Warner Park, Part I
Sunday, April 9, 2023
Saturday, April 8, 2023
Goodbye to Ya Ya
Today, the Memphis Zoo is throwing a farewell party for its giant panda, Ya Ya, who is scheduled to return to China later this spring. The panda has been an icon of the zoo for 20 years, and will be sorely missed.
Friday, April 7, 2023
The Personable Tiger
Wednesday, April 5, 2023
The Reluctant Volunteer
Tuesday, April 4, 2023
Species Fact Profile: Southern Three-Banded Armadillo (Tolypeutes matacus)
Southern (La Plata) Three-Banded Armadillo
Tolypeutes matacus (Desmarest, 1804)
- Body length approximately 22-30 centimeters with an additional 6-8 centimeters of tail (stout, immobile). Weigh 1-1.6 kilograms. Forefeet have four separate claws; hind feet have one separate, thick claw and three that are grown together, resembling a hoof.
- Typically, a yellowish-brown color
- Back is covered with a thick, leathery shell of keratin, segmented into three bands (usually – some individuals may possess two bands, others four). Unique among most armadillos (a trait shared only by the Brazilian three-banded armadillo), this species can roll into a ball, with the shell completely enclosing the body (a small gap can forcefully snap shut on the paw – or hand – of any predator that tries to reach inside). They are able to do this because the front and rear portions of the shell are not attached to the skin on the sides, providing greater flexibility.
- The shell can also trap air which is then warmed by the body, reducing heat loss
- Shell is primary anti-predator mechanism, and a largely effective one. Predators include wild canids and felids, as well as raptors
- Penis of the male is one of the longest in proportion of body size of any mammal, up to 2/3 the body length (has to be long to extend past the female’s shell to the vaginal opening)
- Primarily nocturnal, but active by day during colder weather, and younger armadillos may be more diurnal to avoid nocturnal predators
- Poor eyesight, primarily use sense of smell to find food, identify one another, and determine readiness to mate
- Do not dig their own burrows, instead using abandoned anteater burrows; may also take shelter in dense vegetation (perhaps not being as much of a digger as other species because of its more sophisticated shell defenses)
- Habitat destruction is main threat (no longer present in Buenos Aires province in Argentina, for example) but able to tolerate some habitat modification, subsist on cultivated land
- Hunted locally for food (non-fossorial nature makes it easier to catch than other armadillos). Shell is sometimes used in handicrafts. Also some capture for sale in the pet trade. Vulnerable to overexploitation due to slow reproductive rate
Sunday, April 2, 2023
Saturday, April 1, 2023
Mammals of Unusual Size at the National Zoo
Just a friendly reminder to check the dates of all news articles that you see shared on the internet...
Glyptodon Pups Born at the Smithsonian's National Zoo