02 de dezembro de 2019

Drum Point, Maryland Community Birds - Fall, 2019

Drum Point to Seahorse Beach
(Calvert Co., MD)
Fall (Sept/Oct/Nov) 2019

LOONS
Common Loon
PELICANS
Brown Pelican
CORMORANTS
Double-crested Cormorant
HERONS,etc.
*Great Blue Heron
Great Egret
Green Heron
DUCKS, etc.
*Canada Goose
Wood Duck
*Mallard
*Bufflehead
*Hooded Merganser
Ruddy Duck
VULTURES
*Black Vulture
*Turkey Vulture
HAWKS, etc.
Osprey
*Bald Eagle
*Red-shouldered Hawk
GULLS,etc.
*Ring-billed Gull
*Great Black-backed Gull
American Herring Gull
DOVES
Mourning Dove
HUMMINGBIRDS
*Ruby-throated Hummingbird
KINGFISHERS
Belted Kingfisher
WOODPECKERS
Red-bellied Woodpecker
Yellow-bellied Sapsucker
*Downy Woodpecker
Northern Flicker
Pileated Woodpecker
FLYCATCHERS
Eastern Phoebe
*Eastern Kingbird
WRENS
*Carolina Wren
THRASHERS, THRUSHES, etc.
Gray Catbird
*Northern Mockingbird
*Brown Thrasher
Eastern Bluebird
American Robin
NUTHATCHES, etc.
*Carolina Chickadee
Tufted Titmouse
White-breasted Nuthatch
JAYS, CROWS
*Blue Jay
*American Crow
FINCHES
*House Finch
*American Goldfinch
WARBLERS
*Yellow-rumped Warbler
Pine Warbler
SPARROWS, etc.
Chipping Sparrow
*Song Sparrow
White-throated Sparrow
Dark-eyed Junco
*Northern Cardinal
BLACKBIRDS, etc.
Red-winged Blackbird

Number of species observed this period: 51
*indicates species recorded with photos in iNaturalist: 25

Publicado em 02 de dezembro de 2019, 09:28 PM por rosalie-rick rosalie-rick | 0 comentários | Deixar um comentário

06 de setembro de 2019

Drum Point, Maryland Community Birds - Summer 2019

Drum Point to Seahorse Beach (Calvert Co., MD)
Summer (Jun/Jul/Aug) 2019

CORMORANTS
*Double-crested Cormorant
HERONS,etc.
*Great Blue Heron
*Great Egret
*Green Heron
DUCKS, etc.
*Canada Goose
Wood Duck
*Mallard
VULTURES
*Black Vulture
*Turkey Vulture
HAWKS, etc.
*Osprey
*Bald Eagle
Red-shouldered Hawk
SANDPIPERS, etc.
*Spotted Sandpiper
GULLS,etc.
*Ring-billed Gull
*American Herring Gull
*Laughing Gull
*Forster’s Tern
DOVES
Mourning Dove
SWIFTS
Chimney Swift
HUMMINGBIRDS
*Ruby-throated Hummingbird
KINGFISHERS
Belted Kingfisher
WOODPECKERS
Red-bellied Woodpecker
Downy Woodpecker
Northern Flicker
*Pileated Woodpecker
FLYCATCHERS
Great Crested Flycatcher
Eastern Kingbird
SWALLOWS
*Purple Martin
*Northern Roughwinged Swallow
Barn Swallow
WRENS
*Carolina Wren
THRASHERS, THRUSHES, etc.
Gray Catbird
*Northern Mockingbird
*Brown Thrasher
*Eastern Bluebird
American Robin
NUTHATCHES, etc.
*Carolina Chickadee
Tufted Titmouse
White-breasted Nuthatch
JAYS, CROWS
Blue Jay
American Crow
STARLINGS
European Starling
OLD WORLD SPARROWS
*House Sparrow
FINCHES
*House Finch
*American Goldfinch
SPARROWS, etc.
*Chipping Sparrow
*Northern Cardinal
BLACKBIRDS, etc.
Red-winged Blackbird
Common Grackle
Orchard Oriole

Number of species observed this period: 50
*indicates species recorded with photos in iNaturalist: 29

Publicado em 06 de setembro de 2019, 08:54 PM por rosalie-rick rosalie-rick | 0 comentários | Deixar um comentário

02 de junho de 2019

Drum Point Community (Calvert County, Maryland) Spring Birds

Drum Point to Seahorse Beach (Calvert Co., MD)
Spring (Mar/Apr/May) 2019

LOONS
*Common Loon
GREBES
Horned Grebe
CORMORANTS
Double-crested Cormorant
HERONS,etc.
*Great Blue Heron
Great Egret
Green Heron
DUCKS, etc.
*Mute Swan
*Canada Goose
*Wood Duck
*Mallard
Long-tailed Duck
*Bufflehead
Hooded Merganser
*Red-breasted Merganser
VULTURES
*Black Vulture
*Turkey Vulture
HAWKS, etc.
*Osprey
*Bald Eagle
Red-shouldered Hawk
SANDPIPERS, etc.
*Least Sandpiper
GULLS,etc.
*Ring-billed Gull
American Herring Gull
DOVES
*Mourning Dove
SWIFTS
Chimney Swift
HUMMINGBIRDS
Ruby-throated Hummingbird
KINGFISHERS
Belted Kingfisher
WOODPECKERS
*Red-bellied Woodpecker
*Yellow-bellied Sapsucker
*Downy Woodpecker
Northern Flicker
Pileated Woodpecker
FLYCATCHERS
Eastern Phoebe
*Eastern Kingbird
SWALLOWS
Purple Martin
Tree Swallow
Northern Rough-winged Swallow
Barn Swallow
KINGLETS
Ruby-crowned Kinglet
WAXWINGS
Cedar Waxwing
WRENS
*Carolina Wren
THRASHERS, THRUSHES, etc.
*Gray Catbird
*Northern Mockingbird
*Brown Thrasher
*Eastern Bluebird
*Hermit Thrush
*American Robin
NUTHATCHES, etc.
Carolina Chickadee
Tufted Titmouse
*Red-breasted Nuthatch
*White-breasted Nuthatch
Brown Creeper
JAYS, CROWS
Blue Jay
*American Crow
STARLINGS
*European Starling
FINCHES
*House Finch
American Goldfinch
WARBLERS
*Yellow-rumped Warbler
*Pine Warbler
*Palm Warbler
Blackpoll Warbler
SPARROWS, etc.
*Eastern Towhee
*Chipping Sparrow
Song Sparrow
*White-throated Sparrow
*Dark-eyed Junco
*Northern Cardinal
BLACKBIRDS, etc.
*Red-winged Blackbird
*Common Grackle
*Orchard Oriole

Number of species observed this period: 69
*indicates species recorded with photos in iNaturalist: 42

Publicado em 02 de junho de 2019, 02:50 PM por rosalie-rick rosalie-rick | 0 comentários | Deixar um comentário

26 de março de 2019

First 2019 eaglet sighting for nest CT-018: March 14th

We have had the good fortune to live very near an eagle nest and been able to watch many aspects of eagle behavior and development since we moved into the neighborhood in 2015. This has included nest repair, fishing (including apparent fishing through the ice), fighting, copulation, the development of eaglets into fledglings, first flights, and even the takedown of a mallard duck. We have been more closely monitoring the nest (assigned CT-018, southern Calvert County, Maryland) since 2017 when we entered the nest into the Maryland Bald Eagle Nest Monitoring Program. This year was the earliest sighting of an eaglet. First sightings were on 20 March and 19 March in 2017 and 2018, respectively. Yesterday (25 March) it appeared that a second eaglet might be in the nest, but a firm confirmation awaits. The fledgling success for this nest has been 1, 2, 2, and 1 fledgling for 2015 thru 2018. Based on reported biology of bald eagles, our estimation is that eggs were laid in early January and hatched by mid-February. Egg hatching occurs approximately 35-38 days after being laid. According to the DC Eagle website, some developmental milestones are below:
~2 weeks - able to hold head up for feeding
~3 weeks - one foot high, feet and beak nearly adult size
~3-4 weeks - covered in a secondary coat of gray down
~3-6 weeks - black juvenile feathers begin to grow in
~4-6 weeks - able to stand; tearing up own food
~6 weeks - nearly as large as their parents
~8 weeks - appetite at its greatest; begin to stretch wings with gusts of wind, may even hover for short periods of time
~9-10 weeks - begin branching (precursor to fledging)
~10-14 weeks - fledge; may remain near nest for four to five weeks; parents still provide food
Remainder of summer - learn to hunt
Fall - on their own

Publicado em 26 de março de 2019, 01:08 PM por rosalie-rick rosalie-rick | 0 comentários | Deixar um comentário

01 de março de 2019

Drum Point Community Birds - Winter of 2019

First installment of hopefully a continuous seasonal birding list for our residential community.

Drum Point to Seahorse Beach Winter (Jan/Feb) 2019

LOONS
Common Loon
GREBES
Horned Grebe
CORMORANTS
Double-crested Cormorant
HERONS,etc.
Great Blue Heron*
DUCKS, etc.
Mute Swan*
Canada Goose*
Wood Duck
Mallard*
Blue-winged Teal
Long-tailed Duck
Black Scoter
Common Goldeneye
Bufflehead*
Hooded Merganser*
Red-breasted Merganser*
Ruddy Duck
VULTURES
Black Vulture
Turkey Vulture*
HAWKS, etc.
Bald Eagle*
Cooper’s Hawk*
Red-shouldered Hawk
GULLS,etc.
Ring-billed Gull*
Great Black-backed Gull*
American Herring Gull*
DOVES
Mourning Dove*
OWLS
Great Horned Owl (heard only)
KINGFISHERS
Belted Kingfisher
WOODPECKERS
Red-bellied Woodpecker*
Yellow-bellied Sapsucker
Downy Woodpecker*
Northern Flicker
Pileated Woodpecker*
KINGLETS
Ruby-crowned Kinglet*
WAXWINGS
Cedar Waxwing*
WRENS
Carolina Wren*
THRASHERS, THRUSHES, etc.
Northern Mockingbird*
Brown Thrasher*
Eastern Bluebird*
American Robin*
NUTHATCHES, etc.
Carolina Chickadee*
Tufted Titmouse*
Red-breasted Nuthatch*
White-breasted Nuthatch*
Brown-headed Nuthatch*
Brown Creeper*
JAYS, CROWS
Blue Jay*
American Crow*
FINCHES
House Finch*
WARBLERS
Yellow-rumped Warbler*
Pine Warbler*
SPARROWS, etc.
Eastern Towhee
Song Sparrow*
White-throated Sparrow*
Dark-eyed Junco*
Northern Cardinal*
BLACKBIRDS, etc.
Red-winged Blackbird*
Common Grackle

Number of species observed: 56
*species (40) – photos recorded in iNaturalist

Publicado em 01 de março de 2019, 02:48 PM por rosalie-rick rosalie-rick | 1 observações | 0 comentários | Deixar um comentário

03 de fevereiro de 2019

Chesapecten fossils

Among the many shells that can be found on the beaches of southern Maryland and some other mid-Atlantic states are scallop shells. In many instances, the shells are actually fossil shells rather than of recent vintage. This post is primarily meant to alert other naturalists in localities such as Calvert County, Maryland that the majority of shells found on the beach are actually fossil shells and might be misidentified as belonging to a recent species. The secondary intent is to provide some help to those that might be interested in learning more about the fossils. In Calvert County, the best resource would be the Calvert Marine Museum which houses an extensive collection of local fossils.

Fossil Genus Chesapecten

Class Bivalvia
Family Pectinidae
Genus Chesapecten

The genus Chesapecten existed from the mid-Miocene Epoch, approximately 20 million years ago, until its extinction during the late Pliocene Epoch, between 3 to 4 million years ago. Of historical significance, Chesapecten jeffersonius was the first described fossil from the New World. In 1687, a pecten specimen was the first figured and described fossil from America in Martin Lister’s publication Historiae Conchyliorum Liber III. Lister did not give the specimen a scientific name. Thomas Say, a naturalist at the Philadelphia Academy of Science, recognized Lister’s plate #167 as his named species “Pecten jeffersonius” in 1824. In 1975, the species was reassigned to the newly created genus Chesapecten by Ward and Blackwelder.

The following is a guide to the various Chesapecten species arranged by formation:

Calvert Formation:
Plum Point Marl Member (Beds 4-10), middle Miocene Epoch, Burdigalian/Langhian Stage
Calvert Beach member (Beds 14-16), middle Miocene Epoch, Langhian Stage
Chesapecten coccymelus (Dall, 1898) ​​​​bed 10​
Chesapecten skiptonensis (Mansfield, 1936) beds 14-15​ rare
Chesapecten nefrens Ward & Blackwelder, 1975​​ beds 14-16​
Chesapecten marylandica (Wagner, 1839)​​​ beds 15-16​ uncommon

Choptank Formation:
Drumcliff Member (Bed 17), middle Miocene Epoch, Serravalian Stage
St. Leonard Member (Bed 18), middle Miocene Epoch, Serravalian Stage
Boston Cliffs Member (Bed 19), middle Miocene Epoch, Serravalian Stage
Chesapecten marylandica (Wagner, 1939) ​​bed 17​ uncommon
Chesapecten nefrens Ward & Blackwelder, 1975​​ beds 17-19​

St. Marys Formation:
Little Cove Point Member (Beds 21-23), upper Miocene Epoch, Tortonian Stage
Windmill Point Member (Bed 24), upper Miocene Epoch, Tortonian Stage
Chesapecten covepointensis Ward, 1992 ​​​beds 21-23
Chesapecten santamaria (Tucker, 1934) ​​​bed 24

Eastover Formation:
Claremont Member, upper Miocene Epoch, Tortonian Stage
Chesapecten middlesexensis (Mansfield, 1936)
C. middlesexensis middlesexensis (Mansfield, 1936)
C. middlesexensis ceccae Ward, 1992
Cobham Bay Member, upper Miocene Epoch, Tortonian/Messinian Stage
Chesapecten middlesexensis middlesexensis (Mansfield, 1936)

Yorktown Formation:
Sunken Meadow Member, lower Pliocene Epoch, Zanclean Stage
Chesapecten jeffersonius (Say, 1824)
Rushmere, Morgarts Beach, and Moore House Members, upper Pliocene Epoch, Piacenzian Stage
Chesapecten madisonius (Say, 1824)
Chesapecten septenarius (Say, 1824)

Unless noted, the relative occurrence of the various species is common to abundant. Biostratigraphic assignments based on Ward, 1992 (see below).

References:
LW Ward, Molluscan Biostratigraphy of the Miocene, Middle Atlantic Coastal Plain of North America, Virginia Museum of Natural History, Martinsville, VA (1992).

LW Ward & BW Blackwelder, Chesapecten, a New Genus of Pectinidae (Mollusca: Bivalvia) from the Miocene and Pliocene of Eastern North America, United States Government Printing Office, Washington, DC (1975).

LW Ward & BW Blackwelder, Stratigraphic Revision of Upper Miocene and Lower Pliocene Beds of the Chesapeake Group, Middle Atlantic Coastal Plain, United States Government Printing Office, Washington, DC (1980).

Publicado em 03 de fevereiro de 2019, 09:23 PM por rosalie-rick rosalie-rick | 0 comentários | Deixar um comentário

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