Tag: costa rica

A splash of summer

On By Mike and Christy3 Comments

Well, yes it is only March, and winter will be hanging around, but who can resist a splash of summer just a little before it’s time.

A flash of red moving in the canopy lead us to a beautiful Summer Tanager perched overhead. These birds are specialized hunters of bees and wasps. Catching them on the wing and managing to avoid getting stung and removing the stinger by rubbing thier prey on a tree branch prior to confining their meal.

Most of our encounters with the brilliant colored males were looking through dense foliage however once and awhile one managed to land in clear sight and in camera view.

A little splash of summer on a late winters day.

Gone Bananas

On By Mike and Christy1 Comment

While I am not a big fan of bananas this Variegated Squirrel sure was.

The Variegated Squirrel is a medium sized tree squirrel found broadly throughout Central America. A diurnal squirrel that rarely ventures onto the ground foraging and nesting in the trees.

It is funny how seeing a species of animal that is so similar yet so different, in this case a squirrel, from those in our day to day lives can elicit a deep internal wow.

For example, when a red squirrel passes us by in the forest nearby we don’t give a second glance, but we stood and watched this guy as long as we could remarking on the colors of their fur and behavior similar yet different from the squirrels in our forests at home.

Happy Friday and wishing you a wonderful weekend and perhaps a little something different?

Roadside Hawk

On By Mike and Christy1 Comment

The Roadside Hawk is on the most common raptors encountered at the edge of forests and cleared fields ranging from Northern Mexico all the way south to Argentina. There are at least 12 subspecies with most being similar in appearance with a grey head, yellow cere, rufous banding across the breast and striped tail. The Roadside Hawk is opportunistic and hunts insects, reptiles and small mammals. We encountered this individual several years ago on a large palm tree peering out into some cleared pasture.

A intense looking hunter and a good look at the banded tail.

Reference:Bierregaard, R. O., P. F. D. Boesman, and G. M. Kirwan (2020). Roadside Hawk (Rupornis magnirostris), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.roahaw.01

Rare is common?

On By Mike and Christy3 Comments

Rare is common?

A recent report published in Science Advances suggests that up to 40% of plant species are actually very rare and these rare species are extremely vulnerable to extinction via climate change as well as destruction of native ecosystems for human land use.

In the introduction to the paper the authors state:

“Why some species are common and others are rare has intrigued ecologists at least, since Darwin. Rare species are orders of magnitude more likely to go extinct, making it puzzling how so many rare species can be maintained.”

To make their conclusions thirty-five research teams form over 20 institutions complied 20 million observational records of plants from around the globe. Their analysis revealed over 435,00 plant species with about 36.5% being classified are rare.

The rare species were clustered in regions around the globe that through time have had more stable climates especially during the planets last ice-age. These rare plant hotspots included regions of the Northern Andes, Costa Rica, Madagascar and regions of Southeast Asia. However as the planet warms and the ever present march of human conversion of land for agriculture, housing and tourism continues these rare plant regions are threatened.

The authors state that:

“If nothing is done, this all indicates that there will be a significant reduction in diversity — mainly in rare species — because their low numbers make them more prone to extinction.”

A very interesting report and a short summary can be found at Science Daily.

 

While none of these photos depict rare plants, or so I think, these are the types of places rare plants might live.

What will be lost when we only have the common left?

Click Image for slide show

References:

  1. Brian J. Enquist, Xiao Feng, Brad Boyle, Brian Maitner, Erica A. Newman, Peter Møller Jørgensen, Patrick R. Roehrdanz, Barbara M. Thiers, Joseph R. Burger, Richard T. Corlett, Thomas L. P. Couvreur, Gilles Dauby, John C. Donoghue, Wendy Foden, Jon C. Lovett, Pablo A. Marquet, Cory Merow, Guy Midgley, Naia Morueta-Holme, Danilo M. Neves, Ary T. Oliveira-Filho, Nathan J. B. Kraft, Daniel S. Park, Robert K. Peet, Michiel Pillet, Josep M. Serra-Diaz, Brody Sandel, Mark Schildhauer, Irena Šímová, Cyrille Violle, Jan J. Wieringa, Susan K. Wiser, Lee Hannah, Jens-Christian Svenning, Brian J. McGill.The commonness of rarity: Global and future distribution of rarity across land plants. Science Advances, 2019; 5 (11): eaaz0414 DOI: 1126/sciadv.aaz0414
  2. University of Arizona. “Nearly 40% of plant species are very rare and are vulnerable to climate change.” ScienceDaily. ScienceDaily, 27 November 2019. <www.sciencedaily.com/releases/2019/11/191127161235.htm>.