Caution: Habitat Improvement Ahead! 

Got a nice video of a pollinator doing some pollinating. 

A non-native iguana snuck into the alligator’s enclosure. Luckily for him Wally wasn’t hungry today!

We hope your Thanksgiving was as great as Nelly’s, our resident Turkey Vulture!

Sinbad

A fan favorite at the Sawgrass Nature Center and Wildlife Hospital, is Sinbad, a yellow-naped amazon parrot. The main mission of the SNC is to rehabilitate and release native wildlife back into the wild, but sometimes we have to provide permanent residency to the animals that come our way. Sinbad is a great example of two of the usual three reasons.

Previous Pet

In the wild, yellow-naped amazon parrots can live twenty to thirty years. In captivity, however, they can live sixty – eighty years. That means any potential pet owner of this gorgeous bird would have to plan for what is going to happen to their beloved parrot upon their death. Sinbad out lived two owners. The extended family of his owners reached out to the Sawgrass Nature Center for help and Sinbad became a permanent resident of the SNC.  Why can’t pets be returned back to the wild? Pet animals are usually captive bred and are totally dependent upon us for food, shelter, and water and may not be able to seek out these things for themselves. They most likely would not be able to survive on their own in the wild and may become easy prey to predators. This is why we should never just “let go of” an animal that we can no longer care for.

Exotic Species

As their name implies, yellow naped amazon parrots are not from Florida. This means they did not originate from Florida and were brought to the area by human intervention. Unlike invasive species, this exotic species does not have an established breeding population in this region and is not causing any inherent harm to our environment. In fact, you are only likely to see this particular species of bird in a place like a zoo, living as a pet, or in a nature center.

Because of the potential harm they can cause in our native ecosystem, it is illegal to release any exotic species into the wild.

Sanctuary Living

Sinbad, along with many other species, will spend the rest of his days being lovingly cared for by the dedicated staff at the Sawgrass Nature Center and Wildlife Hospital. He is provided a healthy and diverse diet of fruits, veggies, seeds, and nuts. One of his favorite things to do is serenade his caretakers in Spanish. He has also been known to give our Camp Director a scare or two by letting out a very good impression of a child screaming.

Interested in meeting Sinbad?

The Nature Center is open Tuesdays to Fridays 9am-5pm and Saturdays and Sundays 10am-3pm. To enter, a five-dollar donation for adults and a three-dollar donation for kids is greatly appreciated.

Fitz was rescued by the SNC a few years ago and is now one of our cutest educational animals. 

Because he is not one of the two types of native wild rabbits found in Florida, he cannot be released. But don't worry, he gets plenty of love and care.

Mesozoic Monthly: Champsosaurus

Good news everyone: it’s September! We’ve made it to month nine of 12! Sometimes it feels like this year will never end. I take comfort in the idea that if life can survive the traumatic Cretaceous-Paleogene (K-Pg) extinction that killed the non-avian dinosaurs, I can make it through 2020. One of the survival champs of the K-Pg extinction was Champsosaurus, a superficially crocodile-like reptile belonging to the extinct group Choristodera.

The skeleton of Champsosaurus laramiensis looks superficially like that of a crocodilian, but this is the result of convergent evolution. Choristoderes (like Champsosaurus) and crocodilians lived contemporaneously for at least 150 million years, until the choristoderes said “after a while, crocodile!” and went extinct. Photo by Triebold Paleontology, Inc., used with permission.

The class Reptilia encompasses an incredible variety of animals: lizards, snakes, turtles, crocodilians, pterosaurs, dinosaurs, and even birds are just a few of its members. In addition to the familiar reptiles that live today, many other reptile groups thrived for millions of years before eventually going extinct. It’s easy to think of dinosaurs like Tyrannosaurus or Triceratops when we talk about extinct reptile groups, but in reality, many extinct groups of animals with no living relatives escape the public eye. Choristodera, an order within the class Reptilia, is one of these groups. Choristoderes were semi-aquatic or aquatic carnivorous reptiles that evolved during the Mesozoic Era (the Age of Dinosaurs) and died out in the Cenozoic Era (the Age of Mammals). Just because they went extinct does not mean they were unsuccessful; the group survived for at least 150 million years! Like many animals, a rapidly shifting environment was probably the source of their demise. Until that point, choristodere evolution was able to ‘keep up’ with the changing times, including the monumental global changes that came with the K-Pg extinction. The combination of a massive asteroid impact in what’s now Mexico, extensive volcanic activity in India, and worldwide climatic shifts resulted in the extinction of over 75% of all species. Research on choristodere teeth suggests that they beat the odds by adapting to new prey.

When you think of an aquatic carnivorous reptile, you probably think of a crocodilian – and that’d be right! The crocodilian body plan is a very successful build for hunting prey in the water. As another aquatic carnivorous reptile, Champsosaurus evolved similar traits. This is an example of convergent evolution, in which unrelated species develop similar characteristics to deal with comparable circumstances. (You can read about more examples of convergent evolution in the January edition of Mesozoic Monthly about the sauropodomorph dinosaur Ledumahadi.) Some of the shared features between Champsosaurus and crocodilians include long, muscular jaws for catching fish, eyes at the top of the head for peering out of the water, and a flattened tail that was paddled side-to-side for propulsion. Of course, Champsosaurus and the rest of the choristoderes had many features that set them apart as well. Unlike crocodilians, which have bony armor called osteoderms embedded in their skin, choristoderes just had skin covered with tiny scales. In addition, crocodilians have nostrils on top of their snouts so that they can breathe while lurking beneath the surface of the water; choristodere nostrils were at the end of their snouts, so that they could stick the tip of their nose out of the water like a snorkel and breathe from down below.

A right dentary (tooth-bearing lower jaw bone) of Champsosaurus sp. from the Upper Cretaceous of Wyoming in Carnegie Museum of Natural History’s Vertebrate Paleontology collection (specimen number CM 96509). The bone is facing upwards, so you’re looking down on the teeth. Check out the dark ‘stripes’ on the enamel of each tooth. These unusual enamel striations are a hallmark of neochoristoderes, the particular choristodere subgroup to which Champsosaurus belongs. Photo by Joe Sawchak.

The traits we see in the skeleton of Champsosaurus help paleontologists paint a picture of its behavior. Instead of lurking at the surface of the water, Champsosaurus would wait on the bottom of a shallow lake or stream for prey to come close, lifting the tip of its snout out of the water to breathe. When a tasty fish approached, it would spring off the bottom with its powerful legs and snatch it with its toothy jaws. Despite having strong legs, Champsosaurus was not adapted to a terrestrial lifestyle. In fact, adult males may not have been able to leave the water at all! Fossils attributed to females have more robust hips and hind limbs, allowing them to crawl onto land to lay eggs. According to this hypothesis, the less-robust males would have been restricted to an aquatic-only lifestyle.

Some of the freshwater environments that Champsosaurus inhabited were relatively cold, but that wasn’t a big deal; choristoderes may have been able to regulate their body temperature (a talent known as endothermy or ‘warm-bloodedness’). Crocodilians, by contrast, live in warm, tropical habitats because they are not capable of regulating their body temperature and rely on the sun to warm their bodies (aka ectothermy or ‘cold-bloodedness’). This would explain why choristoderes were able to live further north than crocodilians. However, it seems that crocodilians had the right idea; temperatures around the tropics change less during cooling and warming periods than those at higher latitudes. So, when the current Antarctic ice sheets began to form and the planet started cooling, the temperate choristoderes had to deal with more environmental change than the tropical crocodilians, and finally went extinct. I think the moral of the story is, we would all be handling 2020 better if we lived in the tropics!

Lindsay Kastroll is a volunteer and paleontology student working in the Section of Vertebrate Paleontology at Carnegie Museum of Natural History. Museum staff, volunteers, and interns are encouraged to blog about their unique experiences and knowledge gained from working at the museum.

Art and nature go hand-in-hand more often than people think. Previous artist in residence, Jan Kolenda, came out to touch up our tortoise statue. This statue highlights some important tortoise features such as their leathery skin that is adapted to crawling across land, their dome shaped shells, and the scutes that make up their shell. 

WAIT: Does that animal really need help?

Every year thousands of young animals are found by people. Most of these wild animals do not need to be rescued. Humans are always a young wild animal’s last hope for survival; never its best hope. A young animal should be removed from the wild only after you have received direct advice from a Wildlife Rehabber. 

Is the animal an orphan? 

An “orphan” is a young animal that is unable to care for itself and whose parents cannot be found or are known to be dead. It is natural for all young animals to explore the world alone once they leave the nest. If you have found a healthy young animal that is able to walk and is fully furred or feathered, it probably does not need your help. Its parents are usually nearby, even if they are not visible to you. Observe the young animal from a distance for some time before calling for help. 

Is the animal injured or weak?

If the young animal appears weak or injured, you should call a wildlife rehabilitator or nature center for further guidance on assessing the situation. If an animal has been attacked by a cat or dog, assume there is an injury even if it is not visible. 

Should I intervene?

The best way to determine if an animal is in need of your help is to contact a wildlife center BEFORE you intervene. Most times, people that believe they are rescuing baby wild animals are advised to place them back where they found them so their parents can do their jobs. Remember, parent animals will not go for their young while you are around, so don’t panic if you can’t see the mom. 

Questions about an animal you think is in need of help? Contact the Sawgrass Nature Center and Wildlife Hospital at 954-752-9453.

What is a Native Species?

Here in Florida, we are privy to a ton of unique and exciting wildlife due to our proximity to two very important natural features: The Everglades and the ocean. These two exciting ecosystems provide us with animals like Key Deer, the Everglades Snail Kite, and the Florida Panther that may not be found elsewhere in the world.

Any ecosystem or habitat in the world has native species. This means that the species arrived and has evolved in an area by only natural processes.  Other species in the ecosystem often evolved together and adapt to sharing an environment. For example, Florida Panthers and deer have adapted to sharing an environment together despite one being predator and the other being prey. It is a relationship they share and rely on to keep each other’s populations in check.

Unfortunately, not every animal we see in the wild is meant to be here. Take, for example, the Burmese Python in the Everglades.

An introduced species like the Burmese Python could affect the environment is several ways. They could adapt poorly in the new environment and perish, they could live within their new home and cause no major harm, or they could thrive with the lack of natural predators and outcompete native species. That scenario could mean that they could take the food, water, space, and other resources that would typically go to native animals. This would disrupt the natural balance in the ecosystem that has evolved over time. When this happens, the non-native species becomes invasive.

Wildlife hospitals like the Sawgrass Nature Center and Wildlife Hospital (SNC) take in and treat native wildlife, but it is illegal for the SNC and anyone else in the State of Florida to release non-native species into the local ecosystem. That means, the SNC can only admit injured or orphaned native animals for rehabilitation and release. Unfortunately, any non-native animal that might come our way would legally have to be euthanized or provided a forever home. Since we cannot always guarantee the space for all non-native animals and do not prefer to euthanize a healthy animal, we encourage finding other places that are specifically meant for taking in and sheltering non-native species.

SNC's resident Yellow-Naped Amazon Parrots were domesticated pets that were donated to us upon their owner's death. While in the wild their life expectancy is about 20-30 years, but in captivity that increases to 60-80 years. Talk about a life long companion!

The Yellow-Naped Amazon Parrots are one of the most intelligent species of parrots. They can typically be found along the Pacific Coast through Mexico and Costa Rica. Two of their main stressors are deforestation and illegal removal of young for the pet trade.