Introduction - New Jersey Audubon Society

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The Great Egret Roost Blitz 2012 Mapping and Monitoring Autumnal Waterbird Roosts in the NY/NJ Metro Area Mike Allen 1 , Nellie Tsipoura 1 , Susan Elbin 2 , John Rowden 2 , and Chip Weseloh 3 1 NJ <strong>Audubon</strong>, 2 NYC <strong>Audubon</strong>, 3 Canadian Wildlife Service
What is an ‘Autumnal Roost’? • Communal sleeping area (usually in trees) • Occupied from after breeding through Fall – A time of wandering & migration for egrets • Sizes vary, but often several dozen egrets – Roosts ranging from 2 to 700+ reported in Ontario • Often mixed-species – Mainly egrets, cormorants, and night-herons • Used perennially – One in NJ active since at least since the 70’s (Rich Kane, pers. comm.).
Page 1 and 2:
Heron and Egret Surveys 2013 Citize
Page 3 and 4:
Citizen Science • Through Citizen
Page 5 and 6:
Shorebird Surveys Ongoing
Page 7 and 8: Nightjar Surveys Northeast Coordina
Page 9 and 10: Heron Surveys
Page 11 and 12: NJA Heron Survey Objectives • To
Page 13 and 14: What is a colony? • Breeding aggr
Page 15 and 16: Harbor Heron Breeding Colonies (Roo
Page 17 and 18: Harbor Heron Feeding Areas • Bird
Page 19 and 20: Where do birds from each island go
Page 22 and 23: Where do birds from each island go
Page 24 and 25: Where do they go?? • Counts at fo
Page 26 and 27: Survey Sites NJA (2008-2012) • 45
Page 28 and 29: Non-nesting habitat use • What ar
Page 30: 2012 28 NJA and 15 NYCA volunteers
Page 45 and 46: Using surveys of foraging areas as
Page 47 and 48: Total # of GREG Observed Abundance
Page 49 and 50: 12 km 3 km
Page 51 and 52: Temporal changes • Changes in sit
Page 53 and 54: 80 Seasonal use of all sites - 2010
Page 55 and 56: 35 Seasonal use by Great Egrets in
Page 57: 2013 Activities • “Harbor Heron
Page 61 and 62: Photo by Allen Woodliffe
Page 64 and 65: Methods: Monitoring • Based on Ch
Page 66 and 67: Foraging Birds
Page 69 and 70: Thanks to the NYC and NJ Audubon vo
Page 71 and 72: Species Composition • In addition
Page 73 and 74: Kearny Roost Our largest roost, it
Page 75 and 76: Cheesequake Roost Our 3 rd largest
Page 77 and 78: Reaction to Disturbance Cheesequake
Page 79 and 80: Timing of Roost Entry & Exit
Page 81: Roost monitoring • Liz Vreeland p
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Introduction - New Jersey Audubon Society

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