On the subject of species records and observers

["Geoffrey Dabb via Canberrabirds " <>]

Using the Atlas of Living Australia, I made a 50km square for each of the eight State/Territory capitals. Each was positioned to catch most of the available records of this native bird species, while also taking in the relevant CBD.  This was the result  –

 

Brisbane 2203

Melbourne 1226

Sydney 966

Canberra 430

Hobart 154

Adelaide 49

Darwin 4

Perth 1 (museum specimen only)

 

Hints - As ALA records go, these are low numbers for a species, White-faced Heron for example having over 700,000 records. Most records of this species are near the capitals, presumably indicating acceptable habitat and following the rule that records generally come from the most convenient places for observers.  However, South Australia is an exception because most records (253 in one 50km square) were more than 50 km from Adelaide.

Which species?  Please don’t reply to list in case people want to think about it.

 

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