Termite Emergence

 

Eastern Subterranean Termites (Reticulitermes flaviceps)
emerging from a trail sign.
Catawba College Ecological Preserve.
Salisbury, North Carolina. 

On a recent hike Diane and I walked through a cloud of insects. Stopping to look, we saw a wooden trail sign swarming with termites that were taking to the air.  They were Eastern Subterranean Termites (Reticulitermes flaviceps) and we were seeing the emergence and nuptial flight of this social insect.  

 

Eastern Subterranean Termites.
Catawba College Ecological Preserve.
Salisbury, North Carolina. 

Eastern Subterranean Termites live underground, as their name suggests. Their colonies can harbor millions of termites and there are three different castes.  Members of the worker caste are wingless, eyeless, white and cannot reproduce.  They eat wood that they digest with the aid of gut microbes. Workers feed members of other castes, raise young and build mud tunnels around the nest.  Termites of the soldier caste resemble workers but they have large jaws that they use to drive off ants and other predators that might invade the colony.   Soldiers cannot feed themselves and rely on workers for their nutrition.  

Eastern Subterranean Termite alates.
Catawba College Ecological Preserve.
Salisbury, North Carolina. 

The third caste is the reproductive caste.  Unlike the workers and soldiers, the members of this caste are dark brown or black with black wings.  They have eyes, and as their name says, they can reproduce.  The reproductive form of the Eastern Subterranean Termite is called an alate.

 

Video of Eastern Subterranean Termites.

Catawba College Ecological Preserve.

Salisbury, North Carolina. 

As we watched, hundreds of termites swarmed from tunnels in the sign and took flight.   This mass of termites was composed of about equal numbers of males and females.  Males and females pair up on the flight, shed their wings and dig tunnels to form new colonies.  

Holes in the sign from which Eastern 
Subterranean Termites emerged.
Catawba College Ecological Preserve.
Salisbury, North Carolina. 

With so many termites appearing at once, predators are overwhelmed by their numbers so many survive to found new colonies.  Vast numbers of animals are always impressive whether it is Wildebeests (Connochaetes sp.) migrating on the savannas of Africa or an swarming termites in North Carolina.  After watching the termites emerge for a few minutes we walked on.  When we passed by the sign again a half hour later all the termites were gone.

Trail sign.
Catawba College Ecological Preserve.
Salisbury, North Carolina. 

New American Parrots

 

Blue-crowned Parakeet (Thectocercus acuticaudatus).
Broward County, Florida. 

People don’t think of the United States as prime parrot territory, but when Europeans arrived in the New World there were two native parrots.  Carolina Parakeets (Conuropsis carolinensis) lived in Eastern North America from Florida north to what would become New York and west to the great plains.  Thick-billed Parrots (Rhynchopsitta pachyrhyncha) are native to the mountains of Mexico and their range extended into the future Arizona, New Mexico and Texas. 

Carolina Parakeets (Conuropsis carolinensis)
by John James Audubon
https://en.wikipedia.org/wiki/Carolina_parakeet#/media/
File:AudubonCarolinaParakeet2.jpg

Unfortunately, Carolina Parakeets were driven to extinction by habitat loss and hunting.  The last member of this species died in the Cincinnati Zoo in 1918.  The Thick-billed Parrot is an endangered species.  Its population in Mexico has been in decline and the last native Thick-billed Parrots in Southwestern United States were seen in the 1930s.  The old story of habitat loss plays a role in this decline but the capture of wild birds for the pet trade also contributed to the loss of Thick-billed Parrots. 

So, we know parrots can live in the United States, but the native species were lost in the early 20^th century.  Since that time other parrots have been introduced to the country.  Some are escaped or released cage birds and at least one species may have colonized the southern border on its own. 

Introduced parrots can be found across the United States, often in urban environments.  Parrots are classified in the Order Psittaciformes, and this order has more than 400 species.  Parrots are generally found in the tropics and subtropics, but as we see, they can reach into temperate regions.  A note about names.  The largest parrots are named macaws.  Medium sized parrots are just called parrots or amazons. Small parrots with long pointed tails are parakeets. 

The greatest diversity of the new American parrots is found in South Florida, the Rio Grande Valley of Texas and California.  The subtropical climate and abundance of fruit trees in these areas fit the lifestyle of parrots and they have made themselves at home.  

Monk Parakeet (Myiopsitta monarchus).
Palm Beach County, Florida. 

Monk Parakeet colonial nest. 
Hidalgo County, Texas.

Monk Parakeets building a nest.
Palm Beach County, Florida.

Monk Parakeets (Myiopsitta monarchus) are originally from subtropical and temperate areas of southern South America.  They are now well established in North America as far north as southern Canada.   Monk Parakeets are bright green with gray on the face and breast.  As with most parrots, they are gregarious but unlike other parrots build nests of sticks that are used by multiple pairs of birds.  Monk Parakeets were imported into the United States for the pet trade.  Some escaped and others were released and they thrived.  Florida is estimated to have a population of up to half a million of these bright and squawking parrots.  We have seen Monk Parakeets in Florida and Texas. 

Nanday Parakeets (Aratinga nenday). 
Palm Beach County, Florida.

The Nanday Parakeet (Aratinga nenday) is another South American species that was released or escaped captivity and found a welcoming environment in Florida and in other locations. They are green with a black face and beak, black wings and a blue tail. We regularly see Nanday Parakeets when we visit Florida. 

Mitred Parrakeet (Psittacara mitrata).
Broward County, Florida. 

Mitred Parakeets.
Broward County, Florida. 

The Mitred Parakeet's (Psittacara mitrata) natural range is the Andes, from Peru to Argentina.  It is also established in South Florida and California from escaped and released birds.  Mitred Parakeets are brilliant green with red on the face.  They travel in noisy flocks to feed on fruit and flowers.  In Florida they nest in rain gutters, vents and holes in buildings.  We found a flock of Mitred Parakeets in an old Ft. Lauderdale cemetery.

Green Parakeets (Psittacara holochlorus).
Hidalgo County, Texas.

Green Parakeets.
Hidalgo County, Texas. 

Originally Green Parakeets (Psittacara holochlorus) ranged from northern Mexico into Central America. They are now thriving in the Lower Rio Grande Valley of Texas.  Hundreds of these parakeets roost in places like downtown McAllen where we found them. The noise made by so many Green Parakeets coming to roost at sunset is amazing. Some of the Green Parakeets in Texas are descendants of captive birds but some may have dispersed from the native population in Mexico.  Green Parakeets are indeed green with a pale beak.

 

Blue-crowned Parakeet.
Broward County, Florida.

Blue-crowned Parakeets.
Broward County, Florida. 

Yet another South American import is the Blue-crowned Parakeet (Thectocercus acuticaudatus).  This green parakeet has a blue forehead and face, a white eye ring and a pink beak. The undersides of the wings are yellow and the tail from below is orange and yellow.  Besides South America, Blue-crowned Parakeets live in South Florida, Southern California and other locations.  We found a large flock in Live Oak trees (Quercus virginana) in Ft. Lauderdale.   

Rosy-faced Lovebird (Agapornis roseicollis).
Maricopa County, Arizona.  

Rosy-faced Lovebird
Maricopa County, Arizona. 

Rosy-faced Lovebirds (Agapornis roseicollis) are native to the savannas of Southwest Africa and are now found in the United States, Europe and other areas.  They are green with rosy-pink faces and a pale bill.  We found them in a small park in Tempe, Arizona, an area that resembles their African home. 

 

Chestnut-fronted Macaw (Ara severus).
Miami-Dade County, Florida.  

Chestnut-fronted Macaws. 
Miami-Dade County, Florida. 

Chestnut-fronted Macaws (Ara severus) are naturally found in lowland rainforests of South America including much of the Amazon basin.  These large, pointy-tailed parrots are green with red and blue on the wings.  The chestnut front in the name comes from a brown patch above the beak.  We found a bedraggled batch of Chestnut-fronted Macaws during a thunderstorm in a South Miami park.

Blue-and-Yellow Macaw (Ara ararauna).
Miami-Dade County, Florida. 

Blue-and-Yellow Macaw.
Miami-Dade County, Florida. 

Blue-and-yellow Macaws (Ara ararauna) are impressively large with a blue back and upper wings and are brilliant gold beneath.  Their crown is green and the black-and-white face pattern sets off the large black beak. We saw them in the same park as the Chestnut-fronted Macaws and they were likewise drenched from the rain. 

It is interesting that the two parrots native to the United States are extinct but other parrots have moved in to fill the parrot niche.  There are now at least 56 species of parrots in the US.  Some may never have a self-sustaining population, but others are thriving and parrots will continue to be part of the avifauna of the United States. 

Nanday Parakeet.
Palm Beach County, Florida. 

A Stroll in the Park

Orchard View Park.
Delray Beach, Florida. 

On our family trips to Florida, we always like to visit Orchard View Park in Delray Beach. This 6-acre park is tucked between a fire station and an elementary school. It has a loop trail, a playground, picnic tables and nice mix of native vegetation and introduced tropical plants. 

This Strangler Fig (Ficus aurea)
is the centerpiece of Orchard View Park. 
This native tree grows around a host tree
and eventually kills it. 
Delray Beach, Florida. 

We went to Orchard View Park in early March this year and found an abundance of small wonders. 

Curly-tailed Lizard (Leiocpehalus carinatus).
This individual does not have a curly tail.
Curly-tailed Lizards were introduced into Florida
 in the 1940s to control insect pests in the sugar cane fields.
Delray Beach, Florida. 

Resurrection Fern (Polypodium polypoidiodies).
This native fern grows on the trunks of trees.
When dry the fern turns brown, shrivels up and looks 
dead.  Rain will make it green up and it is resurrected. 
Delray Beach, Florida. 

The Northern Mockingbird (Mimus polyglottos) is the state
bird of Florida.  Its song is a medley of the songs of other birds.
Delray Beach, Florida. 

Great Bougainvillea (Bougainvillea spectablis) is native of South
America but has been introduced as an ornamental plant to
warm regions around the world, including Florida. The flowers
are small and white, the large red structures are modified leaves
called bracts that play the role of flower petals to attract pollinators. 
Delray Beach, Florida. 

Spinybacked Orbweaver (Gasteracanthera cancriformis).
The genus name of this spider is from
the ancient Greek and means thorny belly.
Delray Beach, Florida. 

Lilac Tasselflower (Emilia sonchifolia).
This delicate native of Asia is now found in tropical and
subtropical areas around the world.
Delray Beach, Florida. 

Brown Anole (Anolis sageri). Males extend their brightly colored
dewlaps and do pushups to attract females.  This invasive species
from the West Indies has replaced the native
Green Anole (Anolis carolinensis) where their ranges overlap,
Delray Beach, Florida.    

A female Brown Anole.
Delray Beach, Florida. 

Spanish Needle (Bidens pilosa) is native to tropical and
subtropical America.  The fruits are dark and rod-shaped
with hooked spines on the end.  These fruits are hitchhikers that
cling to animal fur or people's socks.
Delray Beach, Florida.   

Pileated Woodpecker (Dryocopus pileatus).
This large North American woodpecker is 
always impressive, from its bold black-and-white
pattern to its brilliant red crest. 
Delray Beach, Florida. 

Blue Morning Glory (Ipomea indica).  
This vine is native to Florida and tropical America.
It has been introduced to other parts of the
world and can be invasive.  
Delray Beach Florida. 

White Ibis (Eudocimus albus).
These brilliant white wading birds have
pink legs, pink face, pink beak and bright blue
eyes that give them a startled look. 
Delray Beach, Florida.  

White Ibis.
Delray Beach, Florida. 

Florida Snow (Richardia grandiflora) is native to South America
and when in flower can cover the ground in white. 
Delray Beach, Florida.  

Gray Squirrel (Sciurus carolinensis).
This familiar rodent is common in parks
across eastern North America and in 
Orchard View Park too.
Delray Beach, Florida. 

Oriental False Hawksbeard (Youngia japonica). 
Originally from Asia it is now a
common weed around the world. 
Delray Beach, Florida. 

The Yellow-throated Warbler (Setophaga dominica) breeds
in the Eastern United States and winters in South Florida 
Mexico, Central America and on Caribbean Islands.
Delray Beach, Florida. 

Asiatic Dayflower (Commelina communis). 
Like many of the plants in Orchard View Park this one
started in Asia is now found in North America and Europe too.
Delray Beach Florida. 

While Orchard View Park does not boast a beach, or broad views of the Everglades or a dark cypress swamp, it is a peaceful place with a pleasing selection of Florida flora and fauna.

Orchard View Park.
Delray Beach, Florida.

Sandhill Cranes - Whooping Cranes

 

Sandhill Crane (Antigone canadensis).
Bosque del Apache National Wildlife Refuge, New Mexico. 

Cranes are impressive birds.  They are tall, some approached six feet in height, they perform athletic mating dances and give loud, ringing calls.  There are 15 species of cranes world-wide and are found on all continents except South America and Antarctica. 

North America is home to two species, the more common Sandhill Crane (Antigone canadensis) and the critically endangered Whooping Crane (Grus americana).

Sandhill Crane portrait.  The bright red patch
on the head is bare skin.
Ocala National Forest, Florida. 

Sandhill Cranes with brown-stained feathers.
Anchorage, Alaska.

Sandhill Cranes mating dance.
Ocala National Forest, Florida. 

Sandhill Cranes mating display.
Ocala National Forest, Florida. 

Sandhill Cranes are gray with a red forehead and a dagger-like beak.  They stand over four feet tall with a six-foot wingspan.  During the breeding season Sandhill Cranes will stain their gray feathers brown with iron-rich mud.  The reason for this interesting behavior is widely debated by crane experts.  One camp says it is a part of a mating display, others think it could be a way to clean the feathers of parasites. Some populations of Sandhill Cranes undertake long migrations and flocks often fly in V-formations.  They are also excellent gliders, riding thermals in the fashion of hawks and vultures.   Sandhill Cranes breed across much of northern North American and into eastern Siberia.  These cranes make a migration to the southern tier of the United States and northern Mexico.  Non-migratory populations of Sandhill Cranes live in Florida, Louisiana and Cuba. 

Sandhill Cranes resting in a pond.
Bosque del Apache National Wildlife Refuge, New Mexico.

Sandhill Cranes are found on marshes, ponds and prairies.  They eat fish, amphibians, reptiles, birds and small mammals.  Sandhill Cranes will also feed on waste grain in farm fields.  The Platte River Valley in Nebraska is an important stopover on many Sandhill Crane’s northern migration.  They roost in the river and eat corn left in the fields on their way to Canada and Alaska.  

Sandhill Cranes in flight at sunset.
Pungo Lakes National Wildlife Refuge, North Carolina. 

The great American naturalist Aldo Leopold described the call of the Sandhill Crane as “a pandemonium of trumpets, rattles, croaks and cries that almost shakes the bog with its nearness…”.   Hearing a flock of Sandhill Cranes calling as they fly from a pond at sunrise is an unforgettable experience. 

 

Whooping Crane (Grus americana).
Aransas National Wildlife Refuge, Texas. 

Whooping Crane hunting in a marsh.
Aransas National Wildlife Refuge, Texas. 

Whooping cranes are among the rarest of North American birds and also a conservation success story.  They were probably a rare species before the arrival of Europeans, but their population crashed in the 19^th and 20^th centuries from hunting and habitat loss.  By the 1930s their entire population was less than 30 birds.  Education and captive breeding programs have allowed Whooping Crane numbers to increase to over 800 but they remain endangered. 

 

Whooping Crane with Blue Crab (Callinectes sapidus).
Aransas National Wildlife Refuge, Texas. 

Their loud call gives Whooping cranes their name.  They are white with black wing tips, black on the face and a red crown. Whooping cranes are even larger than Sandhill Cranes standing over 5 feet tall with a 7-foot wingspan.  The main migratory population breeds in northern Alberta and the Northwest Territories of Canada.  In the fall they fly across the middle of the North American continent to winter in the coastal marshes of Texas.  They spend the winter eating crabs and other small animals. Several non-migratory populations have been established but high mortality and lack of breeding success have limited their impact on the overall population.   

Whooping Crane with Blue Crab.
Aransas National Wildlife Refuge, Texas. 

Cranes hold a special place in cultures around the world.  In Asia and the ancient cultures of the Mediterranean cranes symbolized happiness.  Cranes were thought to be goddesses in pre-Islamic Arabia and Aristotle told of fanciful battles between cranes and pygmies in Africa.  In Native American cultures, cranes often appear on rock art and crane clans are a regular feature in many tribal groups.  Richard Powers,in his 2006 novel Echo Maker describes in moving and vivid detail the flight of Sandhill Cranes in the Platte River Valley. “More birds land by the minute, the air red with calls.  A neck stretches long; legs drape behind.  Wings curl forward, the length of a man.  Spread like fingers, primaries tip the bird into the wind’s plane.  The blood-red head bows and the wings sweep together, a cloaked priest giving benediction… They converge on the river at winter’s end as they have for eons, carpeting the wetlands. In the light, something saurian still clings to them: the oldest flying things on earth, one stutter-step away from pterodactyls.”