Lab #5

Date: 2/17/16

Location: Lumber River Conservancy

Lab Activity: Searching for winter breeding salamanders at Hamby's Bay

Habitat: Vernal Pool

Temperature: 61 F

Wind: 3 mph

Humidity: 39%

Tiger Salamander Ambystoma Tigrinum

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    The pattern of the Tiger Salamanders vary and can be spotted like the one we found but are usually striped like the name suggests. The base color is black and they have yellow markings. They have a short snout and can reach lengths of up to 14 inches making them the largest terrestrial salamander alive.

    You can find the Tiger Salamander over most of the continental USA, and you can find them burrowed in holes or underneath coverups like logs or metal sheets.

Dwarf Salamander Eurycea quadradigitata

    When we first caught one these guys, we misidentified it as a four toed salamander. As the name implies the Dwarf Salamander is very small in size and don't usually get any bigger than 3.5 inches. Apart from the small size you can identify them by their long slender bodies and tail. 

    The Dwarf Salamander is a rare species in North Carolina, which is why it is classified as species of concern. Their habitat in North Carolina spreads across most of the Coastal Plain, minus the northeastern corner. 

Spring Peeper (Pseudacris crucifer)

    The Spring Peeper, which is distinctively recognized by the X shaped marking on its back, is a member of the family hylidae which makes it a tree frog. These guys will call out in huge choruses and often drown out the sound of any other frogs calling and they start peeping right around the beginning of spring. 

 Spring Peeper Calling in Chorus

Mabee's Salamander (Ambystoma mabeei) 

    The Mabee's Salamander is an example of mole salamander, family Ambystomatidae. The adults are dark in color with small light colored splatters of color all over the topside of the animal. This species is not particularly common in this area so we were lucky to find it. The adults are mostly terrestrial but will usually remain near to a breeding area which usually takes the form of a vernal pool like where we found this or a pond.    

Southern Chorus Frog (Pseadacris nigrita)

We did not actually get to see this species but rather we only heard it in the background.

   The southern chorus frog has a call which can be best compared to a xylophone and can be heard singing during most parts of the day typically near shallow bodies of water. They breed from November to April throughout most of their range but have been known to breed year round in Florida.

   Its underside color varies from whitish gray to a more tan color and its back is marked with dark broken lines or spots. Most southern chorus frogs have a line starting at their eyes and running down their sides.

    

 Southern Chorus Frog Call

     

    

Lab #4

Date: 2/10/16

Location: Calloway Forest

Activity: Searching for Red Cockaded Woodpeckers

Habitat: Pine Forest

Temperature: 37.9 F

Wind: 10 mph

Humidity: 36%

Red Cockaded Woodpecker (Luconotopicus borealis)

 Male (note the red marking)

Female(no red marking)

    For today's lab, the field zoology of spring 2016 headed out to Calloway Forest in search of the critically endangered Red Cockaded Woodpecker. Unfortunately none of us saw any woodpeckers of any kind. We did however see plenty of evidence that they are there in that forest.

    Red Cockaded Woodpeckers typically remain in families which are usually made up of 3 to 7 members. Most of these individuals are usually related to each other but sometimes can have a few members outside of the family called drifters. There may be one or two drifters present in the group and their purpose of being there is hope that the alpha breeding male dies so they can take his position. These drifters are males from other families that reached that certain age when it was time to move out. There are no female drifters because the girls don't often leave their original family.

    Red Cockaded Woodpeckers live inside of cavities which they themselves carve out using their beaks. They only carve cavities into living longleaf pine trees which have been infected with a fungus that softens the heart wood. The reasons why they are so picky is because these cavities can take up to a decade to carve out and doing it to a healthy tree would take even longer. Living trees are chosen because they will last longer, are less likely to catch fire, and will secrete resin. The woodpecker will peck at the tree to form holes through which resin can flow. The resin acts as a deterrent to keep predators away, namely snakes which find it near impossible to climb on.

                                                      This is what a resin covered tree looks like.

    Humans have come up with ways to help the red cockaded woodpecker. The first way is quite obvious and that is by created forest refuges for them. Another way is by protecting the already made cavities with metal plates and by creating new ones. The function of putting plates around existing cavity entrances is to not allow other species to make the hole bigger so that they can use it. When we make new cavities for them, the way we do it is by carving out a big hole in the side of the tree and inserting a box.

 

                           Man made cavity

Sharp-shinned Hawk (Accipiter striatus)

This was the only bird we saw on our trip to Calloway Forest and unfortunately these hawks prey primarily on smaller bird species which means it may have killed a red cockaded woodpecker or two. These hawks are fly with great agility through dense forests in order to surprise their prey, unlike many birds of prey they they don't swoop down from a great height.

Lab #3

Date: February 3rd, 2016

Location: Lumber River Conservancy

Activity: Placement of articial coverups 

Habitat: Pine/Hardwood Forest

Temperature: 73.1 F

Wind: 8.8 mph

Humidity: 90.4%

    During this lab, we placed cover boards in various places around the Lumber River Conservancy. A coverup is exactly what it sounds like, in the case of our lab it was just a wooden board we threw on the ground although cover ups can be made of anything. 

    There are advantages to using different material for your coverups. A wooden board will remain moist underneath and is more likely to attract amphibians to come and seek shelter underneath. Metal coverups will heat up during the day remaining dry underneath and will attract reptiles such as snakes, but would be undesirable to an amphibian which tries to retain its moisture.

 

Top tier technology.

Pine Woods Treefrog (Hyla femoralis)

    As the name suggests the Pine Woods Treefrog is a mostly arboreal species, but this one was found underneath a coverup. It may have been looking for a place to moisten up or it could have been looking for a small insect to feast on. 

    These frogs can be brown, green or gray in coloration, but if you have a male you will can identify it by the orange flares on the thigh. 

    Their diet consists mainly of animals such as ants, beetles, crickets, moths and other small arthropods.

   Pinewoods Treefrog call

Southeastern Crowned Snake (Tantilla coronata)

    This species was found underneath one of the pre-setup coverups, probably looking for centipedes to eat. These snakes use venom to kill their prey and though they can be quite deadly to a small insect are incapable of doing any real damage to a large mammal. 

    This is a fossorial snake, meaning it borrows underground, and is rarely seen by humans. Although if you want to find one you should start looking under rocks, logs, leaf litter and anywhere a small fossorial snake might hide.

    

Atlantic Coast Slimy Salamander (Plethodon chlorobryonis)

    This species was found underneath one of the pre-setup coverboards probably using it for shelter and gather up some moisture. It may have also been looking for some food. The slimy's main diet consists of spiders, harvestmen, and other such small terrestrial arthropods.

    You can identify this species by its solid black colored body which is covered in several tiny white dots. Adults of this species can be anywhere from 4.5 inches or as long as 8 inches from head to tail. 

    The slimy is a member of the Plethodontidae family of salamanders, commonly known as the lungless salamanders. The slimy doesn't breath with gills either as it is a terrestrial species, they instead breath through their skin and membranes lining their mouths and throats.

Green Anole (Anolis carolinensis)

    The green anole is that lizard species that I find all over my property near the coast, but you can find them throughout the southern USA and the Caribbean Islands. We didn't find this species underneath a pre-setup coverboard like the other species we found during this lab. 

    Green Anoles are capable of changing colors, they can switch between green and brown. The change color as a means of temperature control. When the lizard is cold it will turn brown to maximise the amount of the sun's rays that it absorbs and when its warm it turns green to reflect the rays. These colors also have the added bonus of being the primary colors of their habitat.

    Male Green Anoles are extremely territorial and when they encounter another male will extend their dewlap and begin doing pushups. The dewlap is the red structure located on the underside of the male anole's neck, the purpose of this is to act as a warning. In the scenario that the opposing male did not back down, the two males will end up fighting.