Greenbrook members who enjoy hiking the 6.5 miles of trails in the sanctuary are encouraged to post their observations of flora and fauna on a bulletin board in the parking lot. These listings often alert fellow members to some of the more interesting sights on this portion of the Palisades. The table below is just a small sampling of the many wonderful natural history occurrences at Greenbrook.

This page last updated: December 27, 2016

DATE

SPECIES

LOCATION

2015

August 8

Five-lined skink

Osprey

Patriots Leap

Pond

August 20

6 wood ducks

“ “

August 21

Great lobelia (Lobelia siphilitica) in bloom

Native Plant Project

August 28

Acadian flycatcher

Canada warbler

Pond

“ “

August 30

Pileated woodpecker

2 spotted sandpipers

“F” trail

Pond

September 2

Pearl crescent butterfly

Picnic lawn

September 6

Sachem skipper butterfly

Eastern tailed-blue butterfly

Museum planting

“ “

September 10

Monk parakeet

Below Arboretum Point

September 11

10+ osprey

Over river

September 19

Black-billed cuckoo

Arboretum Point

September 20

638 broad-winged hawks

Migrating along Hudson River

September 25

Ovenbird

ACE intersection

September 30

Turtlehead (Chelone glabra) in bloom

Pond edge near bog

October 1

Belted kingfisher

House wren

Pond

Fairfield

October 8

Great-crested flycatcher

West side of pond

October 14

Dark-eyed juncos

2 peregrine falcons

Picture point

“ “

October 15

Flocks of white-throated sparrows

Throughout Sanctuary

October 16

15 eastern towhees

Around pond

October 22

Merlin

“S” field

October 25

Blue-headed vireo

Dam

October 28

33 wood ducks

Pond

October 30

Northern harrier

Over bog

November 4

Carolina wren

Red-shouldered hawk

“S” field

Parking area

November 7

Hermit thrush

Duck Hawk Lookout

November 15

3 fox sparrows

“O” trail

November 18

Hooded merganser

3 snow geese

Pond

Flying over Fairfield

November 20

Chipping sparrow

Native Plant Project

November 22

30+ cedar waxwings

Yellow-rumped warbler

Glacier Rock

“C” trail

November 29

Cooper’s hawk

Picture Point

December 3

Purple finch

Feeders

December 6

2 meadowhawk dragonflies (Sympetrum sp.)

Near dam

December 13

3 common ravens “mobbing” pair of bald eagles

Washington’s Profile

December 25

Green frog

American robin

Bog path

Parking area

December 27

Spring peeper calling

Lambier Road

2016

January 13

Chipmunk

Feeders

January 17

100+ dark-eyed juncos

“O” trail

January 21

3 pileated woodpeckers

“G” trail

January 22

18-20 white-tailed deer

Throughout sanctuary

January 23

21” snow

February 21

6 black vultures

Picture Point

February 27

12 red-winged blackbirds

Fairfield

February 28

Stoneflies

Kelders Brook crossing

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