Showing posts with label ryan morra. Show all posts
Showing posts with label ryan morra. Show all posts

Monday, July 2, 2012

Puerto Rico II: Herptiles!

This is your second "guest lecture" from the tiny mountain town of Adjuntas, Puerto Rico (soon to be sister-city of Burlington, Vermont!)


 Sounds of the early evening - the coquís singing. 


Cane Toad - Bufo marinus

Cane Toad - Bufo marinus
Unidentified lizard
Common Coquí (Eleutherodactylus coqui)

Common Coquí (Eleutherodactylus coqui)


What: The Common Coquí (Eleutherodactylus coqui) is hands-down the national symbol of Puerto Rico. I am serenaded by them every evening from my urban apartment - I can only imagine that their ko-KEE call would be deafening in the forest. I also discovered a large Cane Toad (Bufo marinus) in the small man-made pool outside my house. I am still not abel to identify this Unknown Lizard ("largato" en español), which is one of many I see scurrying about the open areas all day long - I still have yet to actually catch one - they are fast!


Ecological notes: I've learned that the Common Coquí is native to Puerto Rico, but has become something of a nuisance in other tropical environments into which it has been introduced. The Eleutherodactylus genus (name coming from the Greek for "free-toed" - nearly all have unwebbed feet) is the largest genus of vertebrates in the world with about 700 species (but now, as with many re-classification schemes, the genus is being divided into several more distinct sub-genera). The coquí is assuredly a tree frog - hence its webbed feet. The Eleutherodactylus are one of the few frog genera wherein all the frogs go through what is called "direct development," meaning that they skip a tadpole stage, and are born as very very tiny frogs (full size female common coquís are only about 40mm, or 1.5in). The Cane Toad is an exotic species, coming originally from Oceania, and now seen all over the island of Puerto Rico, in addition to the only other toad (which is native), the Puerto Rican Crested Toad. There are about 40 different types of lizards on the island of Puerto Rico, depending on how you count (some people draw distinctions between iguanas and skinks when talking about "lizards").


Where: Once again, all in my backyard right here in Adjuntas, Puerto Rico - in the Central Cordillera mountain range of Puerto Rico. Elevation about 1,600 ft. 

Friday, April 20, 2012

Ruby-crowned Kinglet



What: Ruby-crowned Kinglet (Regulus calendula).

Identification: The Ruby-crowned Kinglet is one of the smallest songbirds in North America, weighing only 5-10g (0.2 - 0.4 oz). Its distinguishing characteristics are the wing bars and olive & yellow coloring on its wing tips and backside. The ruby crown that the males wear is hard to see until a male dips its head, and even more rare is when it sticks up the crest like a bright red mohawk. The song is challenging to describe, as it is a jumble of notes; it often begins with 2-3 high pitch "tsees," followed by 5-6 low "tur" notes, and ends with ending with a repeated "tee-da-lett!"

Where: Centennial Woods

Ecological Notes: Ruby-crowned Kinglets can be found as a year-long resident throughout Southern New England, but will come up to mixed woods forests of Northern New England and Canada for breeding. We won't find their nests unless we scale 100-foot tall trees, but they are known to make nests that are quite large compared to their body size, in order to accommodate a large clutch.  Its small, thin bill is indicative of its feeding habits on small insects, but it will also forage lower in the forest on fruits and seeds in the late autumn and winter.

Other Notes: These tiny songbirds are feisty and hard to track, hopping from tree to tree with such alacrity. I went through dozens of worthless, blurred photos before I could capture one in its fleeting stillness. Teage and I began our morning walk being prompted by a mentor of ours who knew the call right away. The rest of the morning, we trailed several kinglets until we made it past the power line clearing, where they came down to just above eye level, and we finally got a good look at the male's fire red crest.