Flowering plants after dinosaur extinction


This video is called Angiosperm (flowering plant) Life Cycle.

From Smithsonian.com in the USA:

Flowering Plants Appeared in Forest Canopies Just a Few Million Years After Dinosaurs Went Extinct

A new study gives scientists some more insight into the weird history of flowering plants

By Mary Beth Griggs

Taking a minute to smell the flowers isn’t that hard nowadays, but angiosperms (a.k.a. flowering plants) weren’t always as ubiquitous as they are now. They appeared rather suddenly in the fossil record, definitively showing up around 132 million years ago. Their sudden appearance has puzzled scientists from Darwin on to the present day, and while today we understand a bit more about how they diversified, scientists are still learning new things about their history.

In a new study published in Geology, scientists think that they’ve figured out another piece of the angiosperm puzzle. Researchers looked at the patterns of leaf veins of flowering plants in tropical forests in Panama and a temperate forest in Maryland. They looked at the leaves of 132 species, reaching the top of the forest canopy with a 131-foot tall crane, and also taking a look at the leaves that had fallen to the forest floor. Leaves that originated at the very top of the trees tended to have a denser collection of veins than the ones further down the tree trunk.

The scientists then compared the patterns found on the leaves in the forests to leaves found in the fossil record, and discovered that flowering plants had reached the heights of the forest canopy around 58 million years ago, during the Paleocene, just a few million years after the dinosaurs went extinct.

Birds of prey migrating in the Netherlands


This video is about raptor migration in Panama.

The Dutch SOVON ornithologists report about migration of birds of prey.

Yesterday, 27 August 2017, was a good day for raptor migration.

451 honey buzzards were counted. And 278 marsh harriers; though most individuals of this species migrate in September.

There were 38 ospreys. And four Montagu’s harriers; one hen harrier, and a pallid harrier (claimed; experts still have to find out whether it was really that rare species).

Yellow-billed cotinga online


Yellow-billed cotingas

From Neotropical Birds Online:

New on Neotropical Birds Online: completed account for the endangered Yellow-billed Cotinga (Carpodectes antoniae). This account features what may be the first-ever images of a juvenile of this beautiful, ghostly, and declining species.

Yellow-billed cotingas live only in southern Costa Rica and adjacent southwestern Panama.

Costa Rican birds, bye-bye!


This video is called Amazing hummingbirdsCosta Rica.

31 March 2014.

After yesterday, today departure from Costa Rica.

To Panama and beyond.

Early in the morning on the bird table: clay-coloured thrush and blue-grey tanager.

Also buff-throated saltator and rufous-collared sparrow.

This video from Colombia is called Buff-throated Saltator, Silver-throated & Lemon-rumped Tanagers.

On our way to the airport: great-tailed grackles.

15:00, Panamanian time: a great-tailed grackle flies past a window at Panama City airport. Like when this journey began; closing the circle.

Bird book about Costa Rica: here.

Howler monkeys and least grebes in Costa Rica


This video from Panama is called The Mantled Howler Monkey of Central America.

23 March 2014 in Costa Rica.

After yesterday, still near the Rio Tempisque.

A mantled howler monkey family with a youngster in the trees, early in the morning.

Four black-necked stilts near the lakelet. They drink.

Two least grebes swim.

A bare-throated tiger heron.

A flock of black vultures.

Near the next lakelet, a green heron on a tree.

A yellow-naped parrot.

Two great kiskadees, busy with nesting material in their bills.

A black-headed trogon in a tree.

A Hoffmann’s woodpecker.

A solitary sandpiper on a lake bank.

A blue-black grassquit in a tree.

A white-collared seedeater.

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To the wildlife in Costa Rica, 13 March


This music video from the USA is called Dionne WarwickDo You Know The Way To San Jose?

However, this blog post is about a different San Jose; the capital of Costa Rica.

Costa Rica is only 0,04% of the surface of planet Earth. However, 5% of all wildlife species can be seen there.

So, I went there on 13 March 2014.

Our plane departed; first, to Panama.

At the international airport of Panama, I saw my first Central American birds. Great-tailed grackles flying around.

This video is about a great-tailed grackle singing near an airport in California, USA.

Further away at Panama airport, birds of prey circling. Too far away to see what species exactly.

There, we transferred to Costa Rica.

This video is called Bird Photography Workshop – Costa Rica (With Wildlife Photographer Glenn Bartley).

Costa Rica 2014 presidential elections: here.

Bat research in Panama


This video says about itself:

30 May 2010

“Bat Women of Panama” showcases a small group of female scientists who use reason, technology and even creativity to reveal the many mysteries of Central America’s amazing bats.

Set on the small island of Barro Colorado, in the Panama Canal, this film follows five research biologists through wet tropical forests as they encounter a variety of bat species with surprising physical and behavioral adaptations. Stunning scenes, fascinating biological wonders and the playful wit of the film narrator will keep students engaged as they learn about one of nature’s most misunderstood creatures.

From Smithsonian.com in the USA:

A Night in the Forest Capturing Bats

Our intrepid reporter joins tropical bat researchers in the field one night and gains some appreciation for their fangs

By Paul Bisceglio

January 30, 2014 2:00PM

Stefan Brändel lives on a big island in the middle of the Panama Canal and spends his nights catching bats. Part of a small group of German scientists studying disease transmission in tropical forests, he hikes deep into the island’s thick vegetation three to four evenings each week to collect data by snaring the creatures in long nets secured between trees. The work lasts until early morning, but Brändel, a doctoral student at the University of Ulm, is indefatigable—he really likes bats.

“I love diversity, and bats are a super diverse group of mammals, with a few thousand species worldwide, and 74 here on this island in the neotropics,” he told me a few months ago, when I visited the island, named Barro Colorado, to see one of the Smithsonian Tropical Research Center‘s research outposts, a cluster of labs and dorms on the forest’s edge where he stays with other scientists throughout the year to study the island’s protected flora and fauna.

“And they are cool animals,” he added. “That’s the most convincing part.” …

The data collection took about two hours. After processesing each bat, Brändel unpinched their wings to let them go. The final one he studied was a rare catch: Phylloderma stenops, known as the “pale-faced bat.” Its tan fur and pointed, ridgy ears were indeed attractive. Tschapka joined Brändel and Hiller to say goodbye to the creature, and they gently passed it around, each holding its puggish face close to his own for one last inspection. When they released it, the bat disappeared shrieking into the forest.

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