Glossy Black-Cockatoo Birding Day Summaries

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The Glossy Black-Cockatoo is listed as a threatened species in Queensland. Although the eastern subspecies Calyptorhynchus lathami lathami is distributed throughout south-east Queensland, the status of this population is difficult to determine because the birds are cryptic in their behaviour and use of natural habitats. Consequently, despite a number of agencies maintaining databases of records for many years, there is still little knowledge of the estimated population size and distribution of the species in the region. To address this shortcoming, the Glossy Black Conservancy initiated the Glossy Black-Cockatoo Birding Day event in 2009. Summaries of previous regional Birding Days are shown here (latest first).

 

The First Five Years

Glossy Black-Cockatoo Birding Days have been running throughout south-east Queensland and north-east New South Wales since 2010. In these first six years there has been tremendous support from the community is furthering our knowledge and understanding of the species’ biology in the region. The Birding Days have provided the basis for further long-term monitoring that can provide some indication of demographic patterns and trends over the years based on a known survey effort. On average, about 200 observers have participated each year, surveying approximately 180 separate 1kmĀ² grid cells annually. The numbers of Glossy Black-Cockatoo observed over the years has fluctuated somewhat, with the lowest numbers recorded in 2015 (n=60) and the highest in 2013 (n=132). The population is slightly male-biased with male:female sex ratio of 1.22 : 1. On average about 8.6% of the birds observed have been identified as juveniles. Numbers have also been quite variable throughout the region but there are relatively consistent observations from the Scenic Rim, Sunshine Coast / Noosa, Gold Coast and Tweed regions.

2016 (October)

RegionObserversCells SurveyedBirds SeenAd MAd FAd UnkJuv MJuv FJuv Unk
Gold Coast182212550102
Brisbane850000000
Scenic Rim1064112003
Sunshine Coast20177340000
Noosa181837121011004
Moreton Bay000000000
Logan54121110000
Redland Bay131414335003
Tweed9100000000
Western Regions221710332101
Totals12311396282730200

2015 (May)

RegionObserversCells SurveyedBirds SeenAd MAd FAd UnkJuv MJuv FJuv Unk
Gold Coast25282200000
Brisbane1530000000
Scenic Rim261719556003
Sunshine Coast26235230000
Noosa14176330000
Moreton Bay860000000
Logan110000000
Redland Bay20226330000
Tweed243311632000
Western Regions251011137000
Totals18416060222015003

2014 (October)

RegionObserversCells SurveyedBirds SeenAd MAd FAd UnkJuv MJuv FJuv Unk
Gold Coast273616329110
Brisbane620000000
Scenic Rim8164004000
Sunshine Coast17146220101
Noosa11813118003
Moreton Bay320000000
Logan23230000000
Redland Bay40285012922010
Tweed19310000000
Totals153160891814432210

2013 (May)

RegionObserversCells SurveyedBirds SeenAd MAd FAd UnkJuv MJuv FJuv Unk
Gold Coast324122954001
Brisbane220000000
Scenic Rim403255131223007
Sunshine Coast42474924210103
Moreton Bay840000000
Logan1480000000
Redland Bay16154222000
Tweed33372110000
Totals1871861324941271011

2012 (October)

RegionObserversCells SurveyedBirds SeenAd MAd FAd UnkJuv MJuv FJuv Unk
Gold Coast465311443000
Brisbane340000000
Scenic Rim121610532000
Sunshine Coast264535770203
Moreton Bay240000000
Logan1370000000
Redland Bay171513642001
Byron---------
Tweed27350000000
Totals1461796922187204

2011 (May)

RegionObserversCells SurveyedBirds SeenAd MAd FAd UnkJuv MJuv FJuv Unk
Gold Coast252917421---1
Brisbane11100000000
Scenic Rim2826251338001
Sunshine Coast412644141411005
Moreton Bay540000000
Logan841001000`
Redland Bay1252110000
Byron10100000000
Tweed374210223201
Totals18715699342233208

2010 (October)

RegionObserversCells SurveyedBirds SeenAd MAd FAd UnkJuv MJuv FJuv Unk
Gold Coast444495-0000
Brisbane24162110000
Scenic Rim262832997106
Sunshine Coast644548131118000
Moreton Bay780000000
Logan36240000000
Redland Bay16162110000
Byron16152110000
Tweed636311331220
Totals2962591063330263212
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