Ornithological Studies

To report a sighting that may be appropriate for posting on the DVOC Listserv contact Bert Filemyr, or Paul Guris. See information below for guidelines.

Ornithological Moments

At just about every meeting we have a short presentation on current birding topics such as problem IDs, birding techniques (field sound recording and photography, etc.), and birding locations. These interesting presentations will last about ten minutes. Details of these presentations are put up on the DVOC webpage as a permanent online resource for everyone. Members are encouraged to participate in these sessions with their own additional comments and wisdom on the topics.

Past Presentations

2014
12/06 Art McMorris Pennsylvania’s Peregrine Falcons: 2014 Season Summary
2013
12/05 Art McMorris Pennsylvania’s Peregrine Falcons: 2013 Season Summary
2012
12/20 Art McMorris Falcons and Parrots: Almost Songbirds?
04/19 Mike Fritz 2011 Billings Big Year
02/16 Art McMorris Snowy Owls: Age, Sex and Plumage
2011
12/15 Rick Mellon Christmas Bird Count Fun
05/05 Steve Kacir When a Butcherbird Isn’t a Shrike: An Introduction to the Cracticinae of Australia Click Here for the song of the Pied Butcherbird singing at dawn.
04/21 Hart Rufe Revisiting ‘The Bare Truth About Birding Martha’s Vineyard’
04/07 Frank Windfelder A DVOC Quiz
03/17 Gregg Gorton Looking for Ted Parker
03/03 Edie Parnum Your Backyard Is For Birds
02/17 Barbara Granger Owls Create New Lawn Decor
02/03 Colin Campbell What will be the next new bird in your state?
01/20 Phil Witmer A Conservation Conversation
2010
12/16 Rick Mellon All time high counts for Xmas Count birds in Area
12/02 Don Jones Vocal Differences between the Recent Splits Announced by AOU
11/04 Debbie Beer The Secret Lives of Saw-Whets
10/21 John Tramontano Wing Beat and Flight Patterns Useful in Avian ID
10/07 Frank Windfelder Ring-billed Gull Plumages
09/09 Frank Windfelder ID of Wigeon
04/15 Steve Kacir Aberrant White Winged Gull
03/18 Chris Walters Nesting Strategies of the Little Guys with the Big Guys
03/04 Bert Filemyr In the Field: Bonaparte’s Gulls and Black-headed Gulls
02/04 Frank Windfelder Eye-arcs and Orbital Rings
02/04 Frank Windfelder Identification of Scaup
2009
12/17 Connie Goldman Ornithology Primer: Some Correlates of Wing Structure and Migration
12/03 Howard Eskin A Fly Fisherman’s Observations About Some Diving Ducks
10/15 Sue Killeen Mystery Hawk at my Bird Bath
10/01 Frank Windfelder Misidentified Birds
05/07 Frank Windfelder Tree Swallow Attack
04/16 Phil Witmer Glass: Reducing Bird Strikes
04/02 Steve Kacir Diving Bird Quiz
03/19 Chris Walters Flight Identification: Wilson’s Snipe vs American Woodcock
02/19 Art McMorris 2008 Peregrine Falcon nesting season in Pennsylvania
02/05 Adrian Binns Distribution of Eastern Screech Owl Morphs
01/22 Adrian Binns Ice Build up on Birds: An Observation
01/08 Frank Windfelder Eider ID
2008
10/06 Steve Kacir Giving Up The Heavens
10/03 Debbie Beer Refuges by the Numbers
09/18 Art McMorris Recent AOU Checklist Changes
06/05 World Series/May Run reports
05/15 Bert Filemyr DVOC World Series team report
05/01 Sarah Warner Swamp Sparrows – A Mystery Unfolds
04/07 Patty Thompson Changes in Spring Arrival Dates for Three Bird Species in Lower Merion from 1997-2007
04/03 Colin Campbell New North American Birds – Expert Predictions and Actuality
03/20 Anthony Gonson The New Delaware Breeding Bird Atlas
03/06 Sally Conyne North American Lesser Black-backed Gull Research ProjectClick Here for Sally’s notes
02/21 Presentation of the 2007 DVOC Conservation Award
02/07 Debbie Beer Sexing Bald Eagles
01/17 Frank Windfelder Black-capped vs. Carolina Chickadee: How Can You Really Tell?
01/03 Steve Kacir Paleo-ornithological Study
2007
12/20 Adrian Binns Separating Hooded and Altamira Orioles in the Rio Grande Valley
11/15 Edie Parnum Hummingbird Hotspot in Central PennsylvaniaVideo 1(32 MB) Video 2(6MB)
11/01 Bert Filemyr Bird Names – The Apostrophes
10/18 Adrian Binns Newcomers to the Delaware Valley
10/04 Adrian Binns Fecal Sacs
09/20 Art McMorris What’s the Logic of Eclipse Plumage in Ducks?
07/05 Adrian Binns Odd Chickadee Behavior? Or just plain Normal?
05/03 Raja Stephenson Bird Names: A Linguistic Perspective
04/19 Art McMorris Eavesdropping on Alarm Calls
03/15 Steve Kacir Poisonous Birds
03/01 Paul Guris Recent Pelagic Results
02/15 Paul Guris New Pelagic Boundaries
02/01 Colin Campbell The Isle of May
01/18 Tim Schaeffer, Executive Director of PA Audubon Report on Progress on the East Park Reservoir Project
01/04 Jane Henderson Sorting Out White-crowned Sparrow Subspecies

Ornithological Moments

At just about every meeting we have a short presentation on current birding topics such as problem IDs, birding techniques (field sound recording and photography, etc.), and birding locations. These interesting presentations will last about ten minutes. Details of these presentations are put up on the DVOC webpage as a permanent online resource for everyone. Members are encouraged to participate in these sessions with their own additional comments and wisdom on the topics.

Upcoming Presentations

Scheduled

Past Presentations

Note: These presentations are copyrighted. All rights are reserved. Contact the individual authors for usage permission.
2014  
  12/6 - Art McMorris - Pennsylvania's Peregrine Falcons: 2014 Season Summary
2013  
  12/5 - Art McMorris - Pennsylvania's Peregrine Falcons: 2013 Season Summary
2012  
  12/20 "Falcons and Parrots: Almost Songbirds?" - Art McMorris
  4/19 - 2011 Billings Big Year - Mike Fritz
  2/16 - "Snowy Owls: Age, Sex and Plumage" - Art McMorris
2011  
  12/15 "Christmas Bird Count Fun" - Rick Mellon
  5/5 -"When a Butcherbird Isn't a Shrike: An Introduction to the Cracticinae of Australia" - Steve Kacir
Click Here for the song of the Pied Butcherbird singing at dawn.
  4/21 - "Revisiting 'The Bare Truth About Birding Martha's Vineyard'" - Hart Rufe
  4/7 - "A DVOC Quiz" - Frank Windfelder
  3/17 - “Looking for Ted Parker” - Gregg Gorton
  3/3 - "Your Backyard Is For Birds" - Edie Parnum
  2/17 - "Owls Create New Lawn Decor" - Barbara Granger
  2/3 - Colin Campbell - "What will be the next new bird in your state?"
  1/20 - "A Conservation Conversation" - Phil Witmer
2010  
  12/16 "All time high counts for Xmas Count birds in Area" - Rick Mellon
  12/2 - “Vocal Differences between the Recent Splits Announced by AOU.” - Don Jones
  11/4- "The Secret Lives of Saw-Whets - Debbie Beer
  10/21 - "Wing Beat and Flight Patterns Useful in Avian ID" - John Tramontano
  10/7 - "Ring-billed Gull Plumages" - Frank Windfelder
  9/9 - "ID of Wigeon" - Frank Windfelder
  "Aberrant White Winged Gull" - Steve Kacir - 4/15
  "Nesting Strategies of the Little Guys with the Big Guys" - Chris Walters (no web version) - 4/1
  "In the Field: Bonaparte's Gulls and Black-headed Gulls" - Bert Filemyr - 3/18
  "Eye-arcs and Orbital Rings" - Frank Windfelder - 3/4
  "Identification of Scaup" - Frank Windfelder - 2/4
2009  
  "Ornithology Primer: Some Correlates of Wing Structure and Migration.” - Connie Goldman - 12/17
  "A Fly Fisherman's Observations About Some Diving Ducks" - Howard Eskin - 12/3
  "Mystery Hawk at my Bird Bath" - Sue Killeen - 10/15
  Misidentified Birds - Frank Windfelder - 10/1
  Tree Swallow Attack - Frank Windfelder - 5/7
  Glass: Reducing Bird Strikes - Phil Witmer - 4/16
  Diving Bird Quiz - Steve Kacir - 4/2
  Flight Identification: Wilson's Snipe vs American Woodcock - Chris Walters - 3/19
  2008 Peregrine Falcon nesting season in Pennsylvania. - Art McMorris - 2/19
  Distribution of Eastern Screech Owl Morphs- Adrian Binns - 2/5
  Ice Build up on Birds: An Observation - Adrian Binns - 1/22
  Eider ID - Bert Filemyr - 1/8
2008  
  Giving Up The Heavens - Steve Kacir - 10/16
  Refuges by the Numbers - Debbie Beer - 10/3
  Recent AOU Checklist Changes - Art McMorris - 9/18
  World Series/May Run reports - 6/5
  DVOC World Series team report - Bert Filemyr - 5/15
  Swamp Sparrows - A Mystery Unfolds - Sarah Warner - 5/1
  Changes in Spring Arrival Dates for Three Bird Species in Lower Merion from 1997-2007 - Patty Thompson- 4/7/08
  New North American Birds - Expert Predictions and Actuality - Colin Campbell 4/3/08
  The New Delaware Breeding Bird Atlas - Anthony Gonson - 3/20/08
  North American Lesser Black-backed Gull Research Project - Sally Conyne - 3/6/08
Click Here for the presentation
Click Here for Sally's notes
  Presentation of the 2007 DVOC Conservation Award - 2/21/08
  Sexing Bald Eagles - Debbie Beer - 2/7/08
  Black-capped vs. Carolina Chickadee: How Can You Really Tell? - Frank Windfelder 1/17/08
  Paleo-ornithological Study - Steve Kacir - 1/3/07
2007  
  Separating Hooded and Altamira Orioles in the Rio Grande Valley - Adrian Binns (no web version available) - 12/20/07
  Hummingbird Hotspot in Central
Pennsylvania

- Edie Parnum - 11/15/07
Video #1 (32mb)
Video #2 (6mb)
  Bird Names - The Apostrophes - Bert Filemyr - 11/1/07
  Newcomers to the Delaware Valley - Adrian Binns - 10/18/07
  Fecal Sacs- Adrian Binns - 10/4/07
  What’s the Logic of Eclipse Plumage
in Ducks?
- Art McMorris - 9/20/07
  Odd Chickadee Behavior? Or just plain Normal? - Adrian Binns - 7/5/07 (no web version available)
  Bird Names: A Linguistic Perspective - Raja Stephenson - 5/3/07 (no web version available)
  Eavesdropping on Alarm Calls - Art McMorris - 4/19/07
  Poisonous Birds - Steve Kacir - 3/15/07
  Recent Pelagic Results - Paul Guris - 3/1/07 (no web version available)
  New Pelagic Boundaries - Paul Guris - 2/15/07
  The Isle of May - Colin Campbell - 2/1/07
  Report on Progress on the East Park Reservoir Project - Tim Schaeffer, Executive Director of PA Audubon - 1/18/06 (no web version available)
  Sorting Out White-crowned Sparrow Subspecies - Jane Henderson - 1/4/07
2006  
  Northern Saw-whet Owl Migration, 2006 - Deborah Danila - 12/21/06
  Vagrants in Britain - Robert Hynson - 11/2/06
  The Little Egret/Western Reef Heron complex - Nicholas Haass - 10/18/06
  Taxonomy of Sooty and Dusky Grouse - Matt Sharp - 9/21/06
  Latin Names - Scott Fraser - 8/7/06
  Birding With an iPod - Bert Filemyr - 8/3/06
  Summer Reading Club - Connie Goldman - 8/3/06
  Migration at Palmyra - A Quiz - Frank Windfelder - 7/6/06
  Breeding Bird Atlas Block Busting - Bob Mercer - 6/1/06
  World Series of Birding Report - 5/18/06 (no web version available)
  Lost World - Garden of Eden - Frank Windfelder - 5/4/06 (no web version available)
  Anting and Antibiotics- Steve Kacir - 4/20/06
  Total Ticks: What, Why, and Who - Bert Filemyr - 3/16/06
  Forensic Identification - Connie Goldman - 3/16/06
  Banding Studies with MAPS Protocol - Doris McGovern - 3/2/06 (no web version available)
  ID Tips - Adrian Binns - 2/16/06
    American Coot / Eurasian Coot
    American Oystercatcher / Eurasian Oystercatcher
    Black-necked Stilt / Black-winged Stilt
    Chimney Swift / Common Swift
    Common Merganser / Goosander
    Great Blue Heron / Grey Heron
    Lesser Yellowlegs / Wood Sandpiper
    Snowy Egret / Little Egret
    Wilson's Snipe / Common Snipe
  • Might Rival Species Share One Nest? - Chris Walters - 2/2/06
  • “The Birds” - Scott Fraser - 2/2/06
  • Information for finding a Mountain Trogon - Rick Mellon - 1/19/06
  • Bird Color Quiz - Bert Filemyr - 1/19/06
2005  
  • 2005 Peregrine Falcon Nesting Season in PA - Art McMorris - 1/5/05
  Gynandromorphy - Adrian Binns - 12/15/05 (no web version available)
  A Forensic Approach to Ivory-billed Woodpecker Searching - Carl Perry - 12/1/05 (Readers may be interested in "Ivory -billed Woodpecker (Campephius principalis): Hope, and the Interfaces of Science, Conservation, and Politics" by Jerome A. Jackson in January 2006 AOU's "The Auk" (Click Here for this article), and in the response to that article, "Clarifications about current research on the status of Ivory-billed Woodpecker (Campephilus principalis) in Arkansas" by John W. Fizpatrick et al. in the April 2006 issue of "The Auk" [Auk 123(2): 587-593, 2006]. Click Here for this article.
  • The Snow Geese Complex - Colin Campbell - 11/3/05
  • Vagrant Western Hummingbirds - Matt Sharp - 10/20/05 (no web version available)
  • DVOC Birders Quiz - Colin Campbell - 10/6/05
  Juvenile Shorebird ID - Chuck Hetzel - 9/22/05 (no web version available)
  • Recent and Impending Taxonomic Changes - Nikolas Haass (9/1/05)
  • The American and European Magpie Puzzle - Nikolas Haass - 7/14/05
  • Peregrine Falcon Head Patterns - Connie Goldman - 5/5/05
  • PA Peregrine Falcon Webcams - Art McMorris - 4/7/05
  Palmyra Bird Census 2005 - Frank Windfelder - 4/7/05 (no web version available)
  • Dark-backed Gulls - Nikolas Haass - 3/17/05
  • Owl Feet and Hunting Methods - Art McMorris - 3/3/05
  • 2004 Saw-whet Owl Banding Season- 2/17/05 - Deborah Danila
  2/3/05 Delaware River Oil Spill presented by Erika Scarborough (John Heinz National Wildlife Refuge) and Eileen Gilbert (Tri-State Bird Rescue and Research) (no web version available)
  • Boreal Owl Identification - 2/3/05 - Connie Goldman
  • Northern / Loggerhead Shrike ID - 1/20/05 - Adrian Binns
  • Newly-discovered Bird Species - 1/6/05- Anita Guris
2004  
  • Canada Goose/Cackling Goose - 12/2/04 - Matt Sharp
  From the Archives -11/4/04 - Lynn Jackson (no web version available)
  • Laughing Gulls / Franklin's Gulls - 10/21/04 (Adrian Binns)
  • Hypopigmentation - 10/7/04 (Nikolas Haass)
  • Preparation of Bird Study Skins - 9/23/04 - Connie Goldman
  • Identification of Red-footed Falcon and Amur Falcon - 9/2/04 (Nickolas Haass)
  • Greater Spotted Woodpecker Behavior - (Bonus) - (Nikolas Haass)
  Why is it named that? A guide to puzzling bird names - 5/20/04 (Art McMorris) (no web version available)
  Porphyrin Pigments in Bird Feathers - 5/6/04 (Art McMorris) (no web version available)
  • Endemic Birds of the North America - 4/15/04 (Bert Filemyr)
  • White-throated Sparrow: Biology of Color Morphs- 4/1/04 (Art McMorris)
  • East Park Reservoir and Diving Duck Depths - 3/18/04 (Doris McGovern) (This is an abridged version of the presentation made at the DVOC meeting)
  • ID pointers and traps: Greater White-fronted, Pink-footed and Bean Goose - 3/4/04 (Nikolas Haass) (This is an abridged version of the presentation made at the DVOC meeting)
  • What to Listen for in Learned Calls - 2/19/04 (Don Jones)
  • Bohemian Waxwings vs. Cedar Waxwings (Bonus) (Martin Selzer)
  Juvenile Jaegers - 2/5/04 (Paul Guris) (no web version available)
  • Recent AOU Name Changes - 1/22/04 (Adrian Binns)
  • Ring-necked Ducks - 1/8/04 (Adrian Binns)
2003  
  • Iridescence in Feathers - 12/18/03 (Colin Campbell)
  • Shades of Gray - Gulls - 12/5/03 (Bert Filemyr)
  • Chimney Swifts - 11/20/03 (Jane Henderson)
  White-winged" Juncos - 10/16/03 - Rick Mellon (No web version available)
  • Indian Vulture Crisis - 9/03 (Adrian Binns)
  • Fresh Breeding Plumage Dowitchers - 9/03 (Frank Windfelder)
  Bluebirds - 4/3/03 - Anita Guris (No web version available)
  Saw-whet Owl Calls - 3/20/03 (Mike Fritz) (No web version available)
  • Spotted Sandpiper vs Common Sandpiper - 3/03 (Chris Walters)
  • Common Teal vs. Green-winged Teal - 2/20/03 (Adrian Binns)
  • American Avocet - 2/6/03 (Adrian Binns)
  • Large Alcids - 01/16/03 (Paul Guris)
   
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