eBird codes

[Martin Butterfield <>]

I think the following, from the metadata for the eBird Basic Data set answers your question.  In summary they are codes which griup the wide range of eBird breeding codes together into probability of breeding at the site.

BREEDING BIRD ATLAS CATEGORY – Four categories used to describe a species' breeding

status based on the 'BREEDING BIRD ATLAS CODE' reported on the eBird checklist: C1 –

Observed; C2 – Possible; C3 – Probable; C4 – Confirmed. In most cases, these are the

default values corresponding with the breeding bird atlas code reported by the

observer. But in some cases reviewers of atlas data may reinterpret a breeding category,

and that reinterpretation is reported here. For instance, a tern species might be seen

carrying food (typically C4 – Confirmed), but since terns feed young away from the

nesting area it would be reinterpreted as a lower breeding category. For more

information on reinterpretation of breeding codes, see this document:

https://help.ebird.org/customer/en/portal/articles/2791069-breeding-codereinterpretation.

Martin Butterfield

http://franmart.blogspot.com.au/

https://mallacootaweatherwildlife.blogspot.com/

On Fri, 22 May 2020 at 14:38, McGinness, Heather (L&W, Black Mountain) <> wrote:

Hi all,

 

Does anyone know what the eBird codes ‘C1’ ‘C2’ ‘C3’ or ‘C4’ mean, under ‘reproductive condition’? 

 

They are not listed as standard codes on the eBird websites that I can see.

 

Is the number appended to the ‘C’ some sort of qualifier for observations of courtship or copulation?

 

They have turned up in a database of royal spoonbill records downloaded from the Atlas of Living Australia, in all states and territories, from multiple observers.

 

Thanks in advance,

 

Heather

 

Dr Heather McGinness

Senior Research Scientist

Land and Water  |  CSIRO 

m("csiro.au","Heather.McGinness");" target="_blank">  |  02 62 46 4136  |  0428 124 689

GPO Box 1700 Canberra ACT 2601

 

https://research.csiro.au/ewkrwaterbirds/

Facebook: Waterbirds Australia

Twitter @AusWaterbirds

 

CSIRO Australia’s National Science Agency  |  csiro.au

 

CSIRO acknowledges the Traditional Owners of the land, sea and waters, of the area that we live and work on across Australia. We acknowledge their continuing connection to their culture and we pay our respects to their Elders past and present.