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Mature professor teaching to students against window. Male teacher is explaining to multi-ethnic high school students. They are leaning in school building.
Friends looking at girl launching her radio controlled plane model
Shot of one male student asking the professor for a word in the class to talk about ecology and planet Earth.
Bald mature professor in smart casualwear standing by desk in front of audience and explaining subject of lecture to intercultural students
Group of fifteen-year-old schoolchildren are preparing for classes in the school library, discussing something and making notes in copybooks
Female House Sparrow, Passer domesticus, eating seeds from a woman hand in a park in Madrid, Spain.
Rescued baby bird cuckoo getting care and love from teenage boy. Bird is standing on boy's finger. They are in backyard
University students raising hands in class
A multiracial group of five children and their camp counselor on a field trip to a park during summer camp. They are petting a cockatoo perched on the counselor's arm
The ornithologist shows a European goldfinch (Carduelis carduelis) captured for bird ringing to the public in Hungary.
Teacher giving lectures to nontraditional students on continuing education at night school, engaging students into discussion
Man teacher with notebook is giving interesting lecture for students in the classroom
Elderly man professor answering questions from his students in a lecture.
college life
Education activities in classroom, teacher yelling at pupil
Young man student doing a volcano presentation in the classroom
The ornithologist shows a Blue tit (Cyanistes caeruleus) captured for bird ringing to the public in Hungary.
Teacher lecturing in university classroom, students vary in age from high school to adult in continuing education
Positive teacher helping teenage schoolchildren during lesson in schoolroom
Back view of a teacher educating large group of students.
Full length profile shot of a schoolboy watching an elderly man letting a dove fly isolated on white background
A high angle shot of a man feeding two little birds with the ground on the background. Fauna concept
Tokyo, Japan - October 7, 2013: A male Japanese senior citizen sitting on bench is feeding birds (sparrows) from his hand in the Ueno Park (near the Shinobazu pond).
Chicken of a quail trying to fly up from a women hand after a flock of cranes flying through the sky. Follow your dream
A senior Caucasian bearded male holding a colorful parrot toy on white background
Teacher (50s) with multi-ethnic group of elementary school children at zoo, standing on observation deck overlooking animal exhibit.
Male speaker giving lesson for teenage students in classroom
Group of people, male and female journalists working together on a board meeting in news editorial office at night.
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Man lecturer teaches teenagers about birds.jpg
Man with birds straw baskets.jpg
Man releasing endangered species of bird.jpg
Man holds trumpeter swan during demonstration cygnus buccinator.jpg
Asian man face.jpg
Man fly fishing.jpg
A man photographed fishing.jpg
Man holding rockfish.jpg
Man driving bulldozer.jpg
Native American man.jpg
Man renger.jpg
Debris and injured birds.jpg
Man kayaking toward cliffs.jpg
Man climbing on mountain.jpg
Man driving survey boat.jpg
Mass hunting of waterfowl birds.jpg
Old man fisherman cleans fish.jpg
Man on pond.jpg
Man collecting red salmon otoliths.jpg
Man entering cave.jpg
Man in forest (1).jpg
Man on water.jpg
Man observes sunset.jpg
Man stands on iced shoreline.jpg
Museum of man.jpg
Migrating birds flying in dusk.jpg
Man and boy paddle a canoe.jpg
Man cleaning equipment.jpg
Man holding eastern indigo snake.jpg
Man and girl in kayak.jpg
Man prepares to go canoeing.jpg
Man weighing rockfish.jpg
Man weighs king salmon fish.jpg
Old man fishing.jpg
Trip bus.jpg
Afro American man working in forest.jpg
Newspaper photographer interviews talking with a man.jpg
Professional photographer captures birds in flight.jpg
Two children and a man view wildlife.jpg
Boy hunter watches for birds coming.jpg
Debris and injured birds in lagoon.jpg
Sunsets seagulls.jpg
Man on boat vintage history photography.jpg
Adults man ranger rides in airboat.jpg
Man feeds pine marten.jpg
Man holds jetbead root.jpg
Man in forest working.jpg
Man speaking on meeting.jpg
Man walk through swamp.jpg
Man working in class.jpg
Man and women standing.jpg
Climbing man on mountain.jpg
Man and boy with fishing pole.jpg
Man seated in wheelchair while fishing.jpg
Man reading and writing at table.jpg
Man and child paddle a sport canoe.jpg
Man in orange life vest paddling.jpg
Man and child fish from canoe.jpg
Man holding a rainbow trout (Oncorhynchus mykiss).jpg
Man shows boy how to fish.jpg
Happy man in boat.jpg
Man alone in forest.jpg
Man in fast boat.jpg
Man in high grass.jpg
Man working on wall.jpg
Man on dock pier.jpg
Man in wild fields.jpg
Children watch for birds.jpg
Man at eroding shoreline.jpg
Man checking oil well.jpg
Man drives a motor boat.jpg
Man driving small boat.jpg
Teenagers on beach collect loggerhead turtle eggs.jpg
Balboa parks towers.jpg
Balboa park tower.jpg
Float plane on lake and man canoeing.jpg
Climber man in mountain.jpg
Hang gliding with birds.jpg
Captive pen for birds.jpg
Man holding live trap with ferret inside.jpg
Man walking on lake coast.jpg
Man walks a path in desert.jpg
Man walking in horsetail flats.jpg
Man with hat in forest.jpg
Man working in wild forest.jpg
Man and female on boat.jpg
Man with children in nature.jpg
Older man and young toddler.jpg
Kids look for birds with their binoculars.jpg
Elder man with smudge pot.jpg
Man cutting trees aroud home.jpg
Man enjoys waliking in forest.jpg
Man hike on forest trail.jpg
Man holds chainsaw in forest.jpg
Man intently listening during class.jpg
Man in white hat stands.jpg
Man on beach holding a bird.jpg
Man pointing with his finger.jpg
Man recording with video cammera.jpg
Man with shipwreck response kit.jpg
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