Канал: Walter Jahn

BIRDS OF FALL AND WINTER

BIRDS OF FALL AND WINTER

A DOZEN SPECIES OF WATERFOWL at 6 12 Station Sanctuary last month

A DOZEN SPECIES OF WATERFOWL at 6 12 Station Sanctuary last month

DIFFERENT HABITATS, DIFFERENT BIRDS

DIFFERENT HABITATS, DIFFERENT BIRDS

HUNDREDS OF MIGRATING GREEN WINGED TEALS

HUNDREDS OF MIGRATING GREEN WINGED TEALS

pros & cons of waterproofing for cormorants

pros & cons of waterproofing for cormorants

drought creating optimal habitat for harrier hawks

drought creating optimal habitat for harrier hawks

LONE NOVEMBER SNOW GOOSE

LONE NOVEMBER SNOW GOOSE

NORTHERN SHOVELERS IN AUTUMN

NORTHERN SHOVELERS IN AUTUMN

autumn flight at last for mute swan cygnet

autumn flight at last for mute swan cygnet

BLACK DUCKS

BLACK DUCKS

MALE BLUE HEADED VIREOS hormones & behavior

MALE BLUE HEADED VIREOS hormones & behavior

BIRDS IN FOOD CHAINS

BIRDS IN FOOD CHAINS

ADAPTATIONS OF SWANS & GEESE FOR EATING PLANT MATERIAL

ADAPTATIONS OF SWANS & GEESE FOR EATING PLANT MATERIAL

FEEDING ADAPTATIONS IN PLOVERS

FEEDING ADAPTATIONS IN PLOVERS

BIRD ADAPTATIONS FOR DIVING

BIRD ADAPTATIONS FOR DIVING

BIRD ADAPTATIONS FOR PLUNGE DIVING

BIRD ADAPTATIONS FOR PLUNGE DIVING

FEEDING ADAPTATIONS IN SANDPIPERS & THEIR RELATIVES

FEEDING ADAPTATIONS IN SANDPIPERS & THEIR RELATIVES

SONGBIRDS 3: WARBLERS & SPARROWS

SONGBIRDS 3: WARBLERS & SPARROWS

sharp shinned hawks

sharp shinned hawks

COMMON YELLOWTHROAT

COMMON YELLOWTHROAT

BLUE WINGED WARBLERS

BLUE WINGED WARBLERS

BLACK THROATED BLUE WARBLERS

BLACK THROATED BLUE WARBLERS

AMERICAN REDSTARTS

AMERICAN REDSTARTS

BLACK THROATED GREEN WARBLERS

BLACK THROATED GREEN WARBLERS

BLACK AND WHITE WARBLERS

BLACK AND WHITE WARBLERS

SONGBIRDS part 2: vireos, blackbirds, cardinals

SONGBIRDS part 2: vireos, blackbirds, cardinals

CAROLINA WREN

CAROLINA WREN

SONGBIRDS 1: Flycatchers, Corvids, Thrushes

SONGBIRDS 1: Flycatchers, Corvids, Thrushes

COMMON RAVEN

COMMON RAVEN

WOODPECKERS, OWLS, HUMMINGBIRDS & diverse nonpasserine land birds

WOODPECKERS, OWLS, HUMMINGBIRDS & diverse nonpasserine land birds

NORTHERN FLICKERS: a partial migrant

NORTHERN FLICKERS: a partial migrant

ROBINS: eye rings, migration, & other topics

ROBINS: eye rings, migration, & other topics

MIGRATION OF YELLOW BELLIED SAPSUCKERS

MIGRATION OF YELLOW BELLIED SAPSUCKERS

RED BELLIED WOODPECKER range expanding northwards

RED BELLIED WOODPECKER range expanding northwards

rusty blackbirds in decline

rusty blackbirds in decline

IDENTIFYING A SWAMP SPARROW-- those darn sparrows!

IDENTIFYING A SWAMP SPARROW-- those darn sparrows!

LOOK AT EVERY DUCK!-- one might surprise you

LOOK AT EVERY DUCK!-- one might surprise you

MUTE SWAN CYGNETS cruel world song

MUTE SWAN CYGNETS cruel world song

WILD TURKEY COLORATION

WILD TURKEY COLORATION

WILD TURKEYS

WILD TURKEYS

WILD TURKEY POPULATIONS HAVE REBOUNDED

WILD TURKEY POPULATIONS HAVE REBOUNDED

IDENTIFYING A DOWNY WOODPECKER

IDENTIFYING A DOWNY WOODPECKER

MOURNING DOVE MIGRATION

MOURNING DOVE MIGRATION

ROCK DOVES pigeons

ROCK DOVES pigeons

NORTHERN PARULA WARBLER

NORTHERN PARULA WARBLER

PALM WARBLERS one of the last autumn warblers

PALM WARBLERS one of the last autumn warblers

SANDHILL CRANE song

SANDHILL CRANE song

RAPTORS

RAPTORS

COMMON NIGHTHAWKS

COMMON NIGHTHAWKS

CHIMNEY SWIFTS

CHIMNEY SWIFTS

BLACK & TURKEY VULTURES ON A DEER CARCASS

BLACK & TURKEY VULTURES ON A DEER CARCASS

WHAT IS A RAPTOR? it's complicated

WHAT IS A RAPTOR? it's complicated

FISH CROWS

FISH CROWS

MARSH WRENS

MARSH WRENS

AQUATIC BIRDS

AQUATIC BIRDS

Selaginella in Ecuadorian rainforest

Selaginella in Ecuadorian rainforest

LIVERWORTS in Ecuadorian rainforest

LIVERWORTS in Ecuadorian rainforest

where do aquatic birds fit in the bird family tree?

where do aquatic birds fit in the bird family tree?

EASTERN PHOEBE IN AUTUMN

EASTERN PHOEBE IN AUTUMN

BLUE JAYS

BLUE JAYS

SEPTEMBER WILDLIFE AT OCAS AUDUBON SANCTUARIES

SEPTEMBER WILDLIFE AT OCAS AUDUBON SANCTUARIES

SWANS, GEESE, DUCKS & the autumn migration

SWANS, GEESE, DUCKS & the autumn migration

RED EYED VIREOS IN AUTUMN

RED EYED VIREOS IN AUTUMN

LIFE HISTORY OF THE BALD EAGLE

LIFE HISTORY OF THE BALD EAGLE

GREAT BLUE HERONS GO HUNTING AT NIGHT

GREAT BLUE HERONS GO HUNTING AT NIGHT

JUVENILE BALD EAGLE at Stony Creek Audubon Sanctuary

JUVENILE BALD EAGLE at Stony Creek Audubon Sanctuary

THERMAL UPDRAFTS & RAPTOR MIGRATION

THERMAL UPDRAFTS & RAPTOR MIGRATION

TURKEY VULTURE MIGRATION

TURKEY VULTURE MIGRATION

RED TAILED HAWK NESTS

RED TAILED HAWK NESTS

RED TAILED HAWK MOLTING TAIL FEATHERS

RED TAILED HAWK MOLTING TAIL FEATHERS

CEDAR WAXWINGS IN AUTUMN

CEDAR WAXWINGS IN AUTUMN

GET RID OF YOUR KIDS SO THEY DON'T TAKE YOUR STUFF 3: bribing animals to eat your offspring

GET RID OF YOUR KIDS SO THEY DON'T TAKE YOUR STUFF 3: bribing animals to eat your offspring

4 YEAR OLD BALD EAGLE

4 YEAR OLD BALD EAGLE

THE ANATOMY OF BIRDS & its gradual evolution

THE ANATOMY OF BIRDS & its gradual evolution

GET RID OF YOUR KIDS SO THEY DONT TAKE YOUR STUFF 2 hitchhiking on fur feathers & clothing

GET RID OF YOUR KIDS SO THEY DONT TAKE YOUR STUFF 2 hitchhiking on fur feathers & clothing

GET RID OF YOUR KIDS SO THEY DON'T TAKE YOUR STUFF: part 1--wind & water

GET RID OF YOUR KIDS SO THEY DON'T TAKE YOUR STUFF: part 1--wind & water

MONARCH BUTTERFLIES IN THE NORTHEAST: the great, great grandchildren of last years monarchs!

MONARCH BUTTERFLIES IN THE NORTHEAST: the great, great grandchildren of last years monarchs!

JUVENILE vs ECLIPSE MALE WOOD DUCKS

JUVENILE vs ECLIPSE MALE WOOD DUCKS

MALE MALLARDS IN ECLIPSE

MALE MALLARDS IN ECLIPSE

TWO FEMALE WARBLERS (redstart & yellowthroat)

TWO FEMALE WARBLERS (redstart & yellowthroat)

DOUBLE CRESTED CORMORANT

DOUBLE CRESTED CORMORANT

PIED BILLED GREBE & their call

PIED BILLED GREBE & their call

FEATHERS--colors, structures, functions

FEATHERS--colors, structures, functions

WHY ARE TROPICAL BIRDS MORE COLORFUL?

WHY ARE TROPICAL BIRDS MORE COLORFUL?

LENGTHENED TAIL FEATHERS & SEXUAL SELECTION

LENGTHENED TAIL FEATHERS & SEXUAL SELECTION

AUGUST a great month for wildlife at OCAS Audubon Sanctuaries

AUGUST a great month for wildlife at OCAS Audubon Sanctuaries

TANAGERS: the second largest bird family centered in tropical South America

TANAGERS: the second largest bird family centered in tropical South America

WHAT??!! cardinals & finches are tanagers but tanagers are cardinals??!!

WHAT??!! cardinals & finches are tanagers but tanagers are cardinals??!!

TOUCANS

TOUCANS

LEECH BLOOD VESSELS & the origin of blood vessels

LEECH BLOOD VESSELS & the origin of blood vessels

JUVENILE FEMALE COMMON YELLOWTHROAT WARBLER

JUVENILE FEMALE COMMON YELLOWTHROAT WARBLER

GREAT EGRET: 2 phases of their migration

GREAT EGRET: 2 phases of their migration

IMMATURE COMMON GALLINULE

IMMATURE COMMON GALLINULE

ECUADOR PICAFLOR song (about hummingbird diversity)

ECUADOR PICAFLOR song (about hummingbird diversity)

HUMMINGBIRD DIVERSITY IN ECUADOR as many species in 2 sites as in all of the US

HUMMINGBIRD DIVERSITY IN ECUADOR as many species in 2 sites as in all of the US

the UNBELIEVABLE DIVERSITY OF HUMMINGBIRDS in the Mashpi Preserve in Ecuador

the UNBELIEVABLE DIVERSITY OF HUMMINGBIRDS in the Mashpi Preserve in Ecuador

PREEN GLAND (uropygial gland)

PREEN GLAND (uropygial gland)

COMMON GALLINULE CHICK in trail cam footage & advantages of big feet

COMMON GALLINULE CHICK in trail cam footage & advantages of big feet

WILDLIFE IN OCAS AUDUBON SANCTUARIES towards the end of an extremely dry summer

WILDLIFE IN OCAS AUDUBON SANCTUARIES towards the end of an extremely dry summer

DIVERSE FISH of the Galapagos endemic to Eastern Pacific

DIVERSE FISH of the Galapagos endemic to Eastern Pacific

GALAPAGOS HOGFISH

GALAPAGOS HOGFISH

DUSKY CHUB endemic to Galapagos

DUSKY CHUB endemic to Galapagos

DAMSELFISH OF THE GALAPAGOS ISLANDS

DAMSELFISH OF THE GALAPAGOS ISLANDS

ORANGESIDE TRIGGERFISH

ORANGESIDE TRIGGERFISH

EMBER PARROTFISH & sequential hermaphroditism

EMBER PARROTFISH & sequential hermaphroditism

PACIFIC SERGEANT MAJOR and geographic isolation in fish speciation

PACIFIC SERGEANT MAJOR and geographic isolation in fish speciation

CORTEZ RAINBOW WRASSE

CORTEZ RAINBOW WRASSE

BLUESPOTTED CORNETFISH a thin fish with a wide distribution

BLUESPOTTED CORNETFISH a thin fish with a wide distribution

THE IMPORTANCE OF CURRENTS AND ALGAE IN GALAPAGOS FOOD CHAINS

THE IMPORTANCE OF CURRENTS AND ALGAE IN GALAPAGOS FOOD CHAINS

ECHINODERMS OF THE GALAPAGOS

ECHINODERMS OF THE GALAPAGOS

RAZOR SURGEONFISH

RAZOR SURGEONFISH

BLUECHIN PARROTFISH a hermaphroditic species

BLUECHIN PARROTFISH a hermaphroditic species

BLENNIES OF THE GALAPAGOS

BLENNIES OF THE GALAPAGOS

STREAMER HOGFISH which can transition from female to male

STREAMER HOGFISH which can transition from female to male

KING ANGELFISH

KING ANGELFISH

HIEROGLYPHIC HAWKFISH

HIEROGLYPHIC HAWKFISH

MARBLE RAY which can grow to 9 feet in length

MARBLE RAY which can grow to 9 feet in length

ENDEMIC PLANTS OF THE GALAPAGOS

ENDEMIC PLANTS OF THE GALAPAGOS

CAN "AUTUMN" BIRD MIGRATION BEGIN IN JULY? (yes)

CAN "AUTUMN" BIRD MIGRATION BEGIN IN JULY? (yes)

AMERICAN RED SQUIRRELS

AMERICAN RED SQUIRRELS

HUMPACK WHALES in the Galapagos

HUMPACK WHALES in the Galapagos

GALAPAGOS FUR SEAL an endemic species

GALAPAGOS FUR SEAL an endemic species

2 ENDEMIC INSECTS in the Galapagos

2 ENDEMIC INSECTS in the Galapagos

GALAPAGOS BIRDS WHICH ARE NOT ENDEMIC

GALAPAGOS BIRDS WHICH ARE NOT ENDEMIC

AMERICAN OYSTERCATCHER

AMERICAN OYSTERCATCHER

WHIMBREL

WHIMBREL

WHITE-CHEEKED PINTAIL DUCK Galapagos subspecies

WHITE-CHEEKED PINTAIL DUCK Galapagos subspecies

YELLOW WARBLER Galapagos subspecies

YELLOW WARBLER Galapagos subspecies

AMERICAN FLAMINGOS in the Galapagos

AMERICAN FLAMINGOS in the Galapagos

NODDY TERN Galapagos subspecies

NODDY TERN Galapagos subspecies

MENDEL'S LAWS OF INHERITANCE song

MENDEL'S LAWS OF INHERITANCE song

FRIGATEBIRDS IN THE GALAPAGOS & their courtship

FRIGATEBIRDS IN THE GALAPAGOS & their courtship

GALAPAGOS BROWN PELICAN: fishing, mating, preening

GALAPAGOS BROWN PELICAN: fishing, mating, preening

GALAPAGOS DOVE

GALAPAGOS DOVE

GALAPAGOS HAWKS

GALAPAGOS HAWKS

GALAPAGOS LAVA LIZARDS & evolution

GALAPAGOS LAVA LIZARDS & evolution

GALAPAGOS LAVA GULLS

GALAPAGOS LAVA GULLS

GALAPAGOS PENGUINS

GALAPAGOS PENGUINS

DARWIN'S FINCHES in the Galapagos

DARWIN'S FINCHES in the Galapagos

FLIGHTLESS GALAPAGOS CORMORANT

FLIGHTLESS GALAPAGOS CORMORANT

GALAPAGOS GREEN SEA TURTLES & climate change part 2

GALAPAGOS GREEN SEA TURTLES & climate change part 2

GALAPAGOS SEA LION

GALAPAGOS SEA LION

GALAPAGOS GREEN SEA TURTLES & climate change part 1

GALAPAGOS GREEN SEA TURTLES & climate change part 1

GALAPAGOS TORTOISES

GALAPAGOS TORTOISES

GALAPAGOS MOCKINGBIRDS

GALAPAGOS MOCKINGBIRDS

RED FOOTED BOOBIES in the Galapagos

RED FOOTED BOOBIES in the Galapagos

BOOBIES SONG

BOOBIES SONG

NAZCA BOOBIES in the Galapagos

NAZCA BOOBIES in the Galapagos

BLUE FOOTED BOOBIES 2 courtship & nesting

BLUE FOOTED BOOBIES 2 courtship & nesting

BLUE FOOTED BOOBIES 1 fishing & blue feet

BLUE FOOTED BOOBIES 1 fishing & blue feet

GALAPAGOS LAND IGUANAS

GALAPAGOS LAND IGUANAS

GALAPAGOS SCORPIONS

GALAPAGOS SCORPIONS

MARINE IGUANAS in the Galapagos

MARINE IGUANAS in the Galapagos

DEER PLAGUED BY FLIES

DEER PLAGUED BY FLIES

NORTHERN PARULA WARBLER

NORTHERN PARULA WARBLER

AMERICAN REDSTART

AMERICAN REDSTART

GOSHAWKS

GOSHAWKS

2024 OUTBREAK OF SPONGY MOTHS IN NEW YORK

2024 OUTBREAK OF SPONGY MOTHS IN NEW YORK

HOUSE WREN

HOUSE WREN

KINGBIRDS

KINGBIRDS

GREAT CRESTED FLYCATCHER

GREAT CRESTED FLYCATCHER

COMMON GALLINULE

COMMON GALLINULE

GREEN HERONS

GREEN HERONS

ALTRICIAL vs PRECOCIAL NESTLINGS IN BIRDS

ALTRICIAL vs PRECOCIAL NESTLINGS IN BIRDS

RED WINGED BLACKBIRD NESTS

RED WINGED BLACKBIRD NESTS

the EMBRYOLOGY SONG

the EMBRYOLOGY SONG

ROSE BREASTED GROSBEAK

ROSE BREASTED GROSBEAK

MUTE SWANS STRUGGLING IN ABNORMALLY HOT & DRY CONDITIONS in June 2024

MUTE SWANS STRUGGLING IN ABNORMALLY HOT & DRY CONDITIONS in June 2024

MUSKRAT STRUGGLING IN ABNORMALLY HOT & DRY CONDITIONS in June 2024

MUSKRAT STRUGGLING IN ABNORMALLY HOT & DRY CONDITIONS in June 2024

OCAS AUDUBON JUNE 2024 SANCTUARY UPDATE

OCAS AUDUBON JUNE 2024 SANCTUARY UPDATE

YELLOW WARBLER NESTS

YELLOW WARBLER NESTS

SNAPPING TURTLES at 6 12 Station Sanctuary in Spring

SNAPPING TURTLES at 6 12 Station Sanctuary in Spring

WOOD DUCK intraspecific brood parasitism

WOOD DUCK intraspecific brood parasitism

KILLDEER

KILLDEER

BALD EAGLES ALONG THE DELAWARE more than one per mile on a good day

BALD EAGLES ALONG THE DELAWARE more than one per mile on a good day

BALD EAGLE EAGLETS IN JUNE

BALD EAGLE EAGLETS IN JUNE

AMERICAN GOLDFINCH and its song

AMERICAN GOLDFINCH and its song

RED WINGED BLACKBIRDS MOBBING RED SHOULDERED HAWK

RED WINGED BLACKBIRDS MOBBING RED SHOULDERED HAWK

song about SONG SPARROW songs

song about SONG SPARROW songs

SONG SPARROW songs

SONG SPARROW songs

SWAMP SPARROWS

SWAMP SPARROWS

FIELD SPARROWS

FIELD SPARROWS

CHIPPING SPARROWS

CHIPPING SPARROWS

CEDAR WAXWINGS

CEDAR WAXWINGS

BREATHING MUSCLES song

BREATHING MUSCLES song

HYPOTHALAMUS SONG part 1

HYPOTHALAMUS SONG part 1

LITTLE BLUE HERONS in New York Wetland song

LITTLE BLUE HERONS in New York Wetland song

LITTLE BLUE HERONS in New York perhaps expanding their range due to climate change

LITTLE BLUE HERONS in New York perhaps expanding their range due to climate change

RED EYED VIREO & song

RED EYED VIREO & song

SEMIPALMATED PLOVER

SEMIPALMATED PLOVER

AMERICAN GOLDFINCH and its song

AMERICAN GOLDFINCH and its song

ORANGE COUNTY AUDUBON (OCAS) MAY 2024 SANCTUARY UPDATE

ORANGE COUNTY AUDUBON (OCAS) MAY 2024 SANCTUARY UPDATE

FEMALE PAINTED TURTLE LAYING EGGS( & other topics like turtle gender & butt breathing)

FEMALE PAINTED TURTLE LAYING EGGS( & other topics like turtle gender & butt breathing)

yellow warbler song

yellow warbler song

DUCKLINGS GOSLINGS CYGNETS

DUCKLINGS GOSLINGS CYGNETS

YELLOW-RUMPED WARBLERS or "butter butts"

YELLOW-RUMPED WARBLERS or "butter butts"

WARBLING VIREO

WARBLING VIREO

BALTIMORE ORIOLE

BALTIMORE ORIOLE

SWALLOWS NEST IN CAVITIES

SWALLOWS NEST IN CAVITIES

TREE SWALLOWS

TREE SWALLOWS