Costa Rican mammals, part 1 – those similar to our Carolina wildlife neighbors!

While the trip I took this past August to Costa Rica was mainly focused on birding, our guides fortunately were also quite willing to stop and look for mammals, amphibians, reptiles and insects – people after my own heart! Here I’ll focus on some of the mammals we saw, starting in this 2-part blog with those that were familiar.

Fellow traveler Nan especially was drawn to the canines we came across – there wasn’t a dog (Canis) that she was unwilling to pet!

 

And they often were very cute.

 

As we drove from one destination to another, it was not uncommon to see light-colored cattle (Bos taurus) grazing in fields. It turns out that about 75% of the country’s cattle are found in Guanacaste province (where we started our trip) and that the Brahman breed is the one commonly raised for the meat industry.

I saw mostly cows, but during a visit to southern Costa Rica last year, we also saw a laid-back steer.

 

There were horses (Equus caballus) grazing in some fields and mountain valleys.

Everywhere we went, there were squirrels scurrying about on the ground, in trees and at feeding stations. The most commonly seen squirrel in the country is the variegated squirrel (Sciurus variegatoides), which varies in color from gray hues to dark brown colors.

  

This species spends most of its time in trees and does not hoard food.

 

Their main dietary selection consists of various seeds, although they also eat acorns, fruit and insects.

   

Another cute rodent is the red-tailed squirrel (Notosciurus granatensis), which is usually found in the cloud forests and wet/humid areas.

Although in some places, people warn against feeding mammals, we saw a red-tailed squirrel enjoying fruit at a restaurant that attracts tourists with its plants that attract hummingbirds.

 

While we do have wild boars in some mountainous North Carolina counties, as well as feral swine in Eastern coastal areas, we will not see collared peccaries (Pecari tajacu) roaming our forests and woods. They share some characteristics of the pig family but are not classified as pigs.

They are both carnivorous and vegetarian, even eating tulip bulbs, which are poisonous for humans. It’s said they usually ignore humans and that was the case for this peccary, which paid us no mind as it plodded about the gardens in one reserve.

 

Our final, at least partly familiar, mammal was observed near the restaurant of a hotel where we stayed. We were lucky to see it since these animals are both arboreal and nocturnal. Fellow birder Ylva got a nice photo of the visiting Central American woolly opossum (Caluromys derbianus). Not only is this marsupial a real cutie, it is also a nectar feeder, pollinator and seed disperser so that we got to see a species that fulfills multiple roles in its rain forest habitat.

Next up – the mammals we won’t see in North or South Carolina (yet).

A working farm as a nature reserve

cattle I77A8663© Maria de Bruyn resTo continue the saga of Braeburn Farm, I’d like to introduce you to some of the non-avian wildlife to be found there. As a vegetarian, I’ll admit I was originally a bit reluctant to go there, but I must acknowledge that the farm management does many things to give the cattle a good life.

Red Devon cattle I77A6581© Maria de Bruyn resThey keep their herd of Red Devons (Bos taurus) to about 300 animals and allow the calves to reach the age of at least 3 years. Some cows and bulls are allowed to grow much older (10-12 years or more) and they enjoy a peaceful life before they go to market, rotating through the farm’s varied habitats, which include meadows and fields, ponds, woods and creeks. No pesticides are used in the habitats and the vegetation is allowed to grow as naturally as possible. Farm manager Nick said that when it is time to shift the cows to a new pasture area, he just calls them. The older cows know that they will be enjoying fresh and different veggies so they follow him willingly, leading the rest of the herd along.

My visits in June and July showed how this farm is cultivating biodiversity among plants and wildlife. The fields were dotted with thistles, white clover (Trifolium repens), red clover (Trifolium pratense) and many other plants.

brown-eyed Susan I77A7112© Maria de Bruyn res        Moth mullein Verbascum blattaria I77A5812© Maria de Bruyn res

Brown-eyed Susan (Rudbeckia hirta)                           Moth mullein (Verbascum blattaria)

Bees and butterflies were abundant, showing that the farm’s methods are good for the pollinators.

clouded sulphur I77A6930© Maria de Bruyn res    Clouded skipper I77A7102© Maria de Bruyn

Clouded sulphur (Colias philodice)                             Clouded skipper (Lerema accius)

Least skipper IMG_0155© Maria de Bruyn    Sachem skipper I77A7026© Maria de Bruyn res

Least skipper (Ancyloxypha numitor)          Sachem skipper (Atalopedes campestris)            cabbage white I77A6735© Maria de Bruyn res         monarch I77A6970© Maria de Bruyn res

Cabbage white (Pieris rapae)                      Monarch butterfly (Danaus plexippus)

Leaf-footed bugs (Leptoglossus phyllopus), margined leatherwing soldier beetles (Chauliognathus marginatus), bees and various species of syrphid flies (also known as hoverflies and often mistaken for bees) were exploring the thistles.

leaf-footed bug Leptoglossus phyllopus IMG_4412© Maria de Bruyn res   leaf-footed bug Leptoglossus phyllopus IMG_4400© Maria de Bruyn res

margined leatherwing soldier beetle IMG_4437© Maria de Bruyn resMargined leatherwing soldier beetle

Eastern carpenter bee 2 I77A6964© Maria de Bruyn res            syrphid fly Sphaerophoria I77A5781© Maria de Bruyn

Eastern carpenter bee (Xylocopa virginica)            Syrphid fly (Sphaerophoria)

common oblique syrphid fly Allograpta obliqua IMG_4418© Maria de Bruyn res

Common oblique syrphid fly (Allograpta obliqua)

Syrphid fly - Palpada vinetorum IMG_4422© Maria de Bruyn bg    Syrphid fly - Palpada vinetorum IMG_4422© Maria de Bruyn res

Syrphid fly (Palpada vinetorum)

Elsewhere, the nymph of a wheel bug (Arilus cristatus) moved along large leaves.

Wheel bug - Arilus cristatus IMG_4499© Maria de Bruyn    Wheel bug - Arilus cristatus IMG_4481© Maria de Bruyn res

It pays to look down at your feet as you wander through the fields in the early morning. The grasses are covered in tiny webs that glisten with water droplets. Underneath are the tiny red dwarf sheetweb spiders (Florinda coccinea) that may show themselves if you stay very still.

dwarf sheetweb spider IMG_0117© Maria de Bruyn res     dwarf sheetweb spider IMG_0126© Maria de Bruyn res

dwarf sheetweb spider IMG_0127© Maria de Bruyn   dwarf sheetweb spider IMG_0121© Maria de Bruyn

In the vegetation below you can also see other insects, like the Spur-throated grasshopper (Melanoplus), or the Forage looper moth (Caenurgina erechtea).

spur-throated grasshopper Melanoplus IMG_0152© Maria de Bruyn res      Forage looper I77A5943© Maria de Bruyn res

Various dragonflies and damselflies balance on grasses and sometimes alight on the ground (the former hold their wings out when resting and the damselflies fold their wings along their bodies).

halloween pennant I77A6315© Maria de Bruyn res   halloween pennant Celithemis eponina I77A6337© Maria de Bruyn res

Halloween pennant (Celithemis eponina)

Double-striped American bluet Dancer damselfly I77A6155© Maria de Bruyn res

Double-striped bluet damselfly (Enallagma basidens)

widow skimmer I77A6998© Maria de Bruyn bg

Widow skimmer (Libellula luctuosa)

common whitetail I77A6394© Maria de Bruyn res

Common whitetail (Plathemis lydia)

At the creek crossings, you may see a common sanddragon dragonfly (Progomphus obscurus, a lifer for me!), paper wasps (Polistes) or a viceroy butterfly (Limenitis archippus) having a drink or looking for a mate. The viceroy mimics the monarch but can be distinguished easily with the line crossing its wings horizontally when you see it rest.

Common sanddragon dragonfly I77A6480© Maria de Bruyn res    Common sanddragon dragonfly I77A6508© Maria de Bruyn res

paper wasp Polistes I77A6454© Maria de Bruyn bg       Viceroy I77A6432© Maria de Bruyn res

Walking through the fields, you may also occasionally spot a mammal although they are not as easy to see as the other wildlife. As I trudged around a pond, this white-tailed deer fawn (Odocoileus virginianus) was startled from its hiding place – showing off the part of its anatomy for which the species is named and looking as if s/he was sporting a very large feather.

white-tailed deer I77A6198© Maria de Bruyn res           white-tailed deer I77A6199© Maria de Bruyn res

On one outing, Nick and I spotted a couple darling raccoon kits (Procyon lotor), who wasted no time scurrying for cover when they spotted us.

raccoon I77A7213© Maria de Bruyn res     raccoon I77A7225© Maria de Bruyn res

Red Devon cattle I77A6617© Maria de Bruyn resThe farm is a great place to spend quality time outdoors. You can contact the farm management to schedule a visit and they will instruct on which fields and areas are open for visitation. And if you should wander by mistake into a field with some of the cattle, you needn’t worry as the Red Devons are likely to walk away or just watch you as they are a placid breed. I hope that Braeburn Farm becomes a popular birding and wildlife observation area so that we can continue enjoying visits there.