A golden eagle sprays snow as it lands on the branch of a pine tree.

A long-tailed weasel searches the rocks for a meal.

A juvenile goshawk surveys the landscape for prey on a winter day.

A cottontail sits up on its hind legs in an effort to see over snow drifts.

A bobcat relaxes against the warmth of a sandstone cliff in Clark, Wyoming.

A mature goshawk focuses on the photographer in a moment of mutual awareness.

A pair of young mountain goats look over the edge of a cliff to see where the rest of the herd is located. In Wyoming’s Beartooth Mountains.

A desert cottontail pauses with the rising sun behind him, creating a golden outline.

A fox moves among the granite boulders on the top of the Beartooth Mountains searching for the pika that are common in the area.

A bighorn sheep ewe butts her head against a ram along the north fork of the Shoshone River near Cody, Wyoming.

A black-capped chickadee pulls seeds from a dried mullein plant.

A pronghorn doe and her calf watch from a spot of safety.

A bull elk directs his harem across the plains at sunrise.

A great gray owl floats across a field in Yellowstone National Park.

A great gray owl prepares to land on a perch as it hunts for prey in Yellowstone.

This newborn bison calf seeks refuge under its mother in Yellowstone National Park.

A male northern flicker works on a nesting hole in early spring.

A young pine Martin pops up out of the rocks, curious about the human that sits in his territory.

A dusky grouse perches in a lichen covered tree on Sepulcher Mountain near Mammoth in Yellowstone.

A bald eagle stares out from its perch on a tree above the Yellowstone River.

A violet-green swallow soars over the water of an irrigation ditch in search of bugs.

An American wigeon floats across a pond on Bainbridge Island, Washington.

A mother white rhinoceros and her daughter lie down for an afternoon siesta in Sabi Sands preserve in South Africa.

A male paradise flycatcher rests for a brief moment in Botswana’s Okavango Delta.

A mother vervet monkey caresses her baby on Sabi Sands preserve in South Africa.

A group of elephants lines up at a watering hole on Sabi Sands preserve, South Africa.

A polar bear stares into the camera as he approaches the ship with curiosity off Svalbard, Norway.

A polar bear is reflected in the water of the Arctic Ocean as he passes by on an ice floe.

A polar bear exposes the size of a paw as he strides across the ice near Svalbard, Norway.

A great frigate bird sits on the nest during breeding season in the Galapagos. He is trying to prove to a female that he will be a good mate.

A mother sea lion touches the nose of her offspring in a gesture meant to reassure the youngster that she has not abandoned it.

A land iguana raises its head into the sunlight, highlighting the prehistoric look of the animal, in Galapagos.

A marine iguana raises its head toward the sun as it strives to warm itself after diving for food.

A pair of parakeets hang on the bottom of their nest, a re-purposed termite nest, near Nosara, Costa Rica.

An African Grey Hornbill enjoys lunch in Sabi Sands, South Africa.

An adult African Wild Dog watches over a group of 15 pups as the rest of the pack is off hunting. Sabi Sands, South Africa.

A pair of African Wild Dog pups fight over the leg of a hare that they successfully hunted minutes earlier. Sabi Sands, South Africa.

A female Baboon indicates her readiness to mate by the bright pink color of her perineal swelling. Sabi Sands, South Africa.

One of numerous raptors in South Africa, the Booted Eagle perches in a tree watching for prey. Sabi Sands, SA.

A Cheetah looks around warily as it prepares to find a spot to spend the night. Sabi Sands, South Africa.

The lowered ears and open mouth of this cheetah signal its concern as it crosses an open area before entering the trees.

Easily identified by its forked tail and bright red eye, the drongo mimics the calls of birds of prey to force other birds into dropping their food. Sabi Sands, South Africa

A large African elephant watches closely as the safari vehicle passes by on the road below. Sabi Sands, South Africa.

An African elephant extends its trunk in an effort to check out the nearby viewers. Sabi Sands, South Africa.

A close-up view of an African elephant dining on vegetation shows the incredible texture of the animal’s thick hide. Sabi Sands, South Africa.

A giraffe towers over the nearby trees as it searches for its next meal. Sabi Sands, South Africa.

A giraffe nibbles on the leaves of an Acacia tree, seeming to be oblivious to the thorny branches. Sabi Sands, South Africa.

The metallic colored wings and red spot on the bill of this ibis provide decoration to an otherwise grey bird. Sabi Sands, South Africa.

A yawning hippo shows off his large, pointed bottom teeth, one of the reasons they are one of the most dangerous animals in Africa. Sabi Sands, South Africa.

Hippos are very territorial and one of the unique ways they mark their turf is by aggressively swinging their short, powerful tails to fling dung and urine around the nearby landscape. Sabi Sands, South Africa.

A spotted hyena casually strolls through the landscape on a small airstrip at dusk. Sabi Sands, South Africa.

A small group of female impala watch for any movement that might signify predators in the area. Sabi Sands, South Africa.

A pair of male impala are easily identified by their long, graceful, lyrate horns. Sabi Sands, South Africa.

The klipspringer is a small antelope, unique in its ability to navigate rocky terrain by walking on the tips of its hooves. Sabi Sands, South Africa.

A large leopard takes a break after unsuccessfully trying to capture a warthog. Sabi Sands, South Africa.

A large male leopard moves across the landscape in Sabi Sands, South Africa.

A leopard takes a break from hunting. Sabi Sands, South Africa.

A male lilac-breasted roller perches on a bush as it hunts for insects. Sabi Sands, South Africa.

A lilac-breasted roller pauses before delivering lunch to its nearby nest. Sabi Sands, South Africa.

A mature male lion sits quietly he waits for nightfall to begin the hunt. Sabi Sands, South Africa.

A red-billed oxpecker appears to whispering secrets into the ear of this female Nyala. Sabi Sands, South Africa.

An ostrich strolls casually through a small herd of zebra. Sabi Sands, South Africa.

An ostrich glances back as it nears a pair of zebra in Sabi Sands, South Africa.

A young square-lipped rhino walks toward the safari vehicle, showing off the lack of horn that was removed by rangers in an attempt to protect him from poachers. Sabi Sands, South Africa.

A pair of rhinos, part of a larger group, move through the landscape. The removal of the horns is done to try to make them safe from poachers. Sabi Sands, South Africa.

A saddle-billed stork appears to be all dressed up as he moves through the water in search of a meal. Sabi Sands, South Africa.

Early morning view of the Sands River from Singita Ebony Lodge. Sabi Sands, South Africa.

A southern yellow-billed hornbill grabs at a spider before swallowing his eight-legged lunch. Sabi Sands, South Africa.

A hornbill perches in a dead tree in Sabi Sands, South Africa.

A spotted hyena uses his nose to search out a possible meal. Sabi Sands, South Africa.

A tawny eagle stretches his wings as he prepares to leave his perch. Sabi Sands, South Africa.

A baby vervet monkey peeks out from the safety of its mother’ s grip. Sabi Sands, South Africa.

A vervet monkey holds her baby close as she calculates her next move. Sabi Sands, South Africa.

Easily identified by its short, projecting crest, a Wahlberg’s eagle rests on a dead tree in Sabi Sands, South Africa.

A red-billed oxpecker hangs off the chin of a water buffalo as it searches for insects on the animal’s neck. Sabi Sands, South Africa.

This male water buck seems to be smiling as he chews his food. The large antelope have a distinct odor that often precedes the sight of them. Sabi Sands, South Africa.

A trio of water buck antelope look up at the safari vehicle. Sabi Sands, South Africa.

A beautiful female water buck seems to be posing for the camera in Sabi Sands, South Africa.

A large white-backed vulture sits in a dead tree and studies the world around him. Sabi Sands, South Africa.

Despite their bovine appearance, wildebeest are members of the antelope family. Sabi Sands, South Africa.

A young male lion sits a little ways apart from his sister and mother after the trio dine on a zebra taken down by a more experienced pack of lions. Sabi Sands, South Africa.

A young lioness still shows signs of her last meal in the blood on her chin from a zebra killed by other lions. Sabi Sands, South Africa.

A red-billed oxpecker rides on the back of a zebra as the larger animal grazes. Sabi Sands, South Africa.