GP Training education support assistant Emily Exon with the dead birds she found in the centre’s gardens.
Staff at GP Training in Frith Street found 14 rainbow lorikeets, two myna birds and a magpie in the centre's gardens last week.
They were confronted with the sight of 27 birds when they returned from last year's New Year break.
None of the birds had obvious injuries.
''It was a horrible sight,'' education support assistant Emily Exon said.
''It's very sad that's it has happened again this year.''
The centre is located in a residential area, a short distance from OneSteel's Maud Street plant.
''It's a quiet area compared to central Mayfield and we see a lot of local flora and fauna,'' Ms Exon said.
Office of Environment and Heritage spokesman Lawrence Orel agreed the deaths were highly unusual.
''The weather has been quite mild, so I doubt the heat killed them,'' he said.
''There's a number of species involved and it's not an isolated area, which makes it unusual.
''We are very keen to hear from anyone who might have information about what could be responsible.''
Fresh specimens would also be useful for testing.
Environment Protection Authority testing on several of the birds that died last year was inconclusive.
An authority spokeswoman said on Thursday that there was insufficient evidence to investigate the matter further. ''The EPA has no evidence to suspect possible pesticide poisoning in the area and, as such, does not have the legislative grounds to investigate further,'' the spokeswoman said.
Anyone witnessing or with knowledge of pesticide spraying should contact the EPA on 131555 or visit epa.nsw.gov.au.
this isnt a mystery, or localised.this is a retarded, bored facebooker employed by the paper(or more accurately, the local ad rag, why youd quote this 'paper' is anyones guess)
Lately, across Australa, THOUSANDS of birds have been killed and are all over the local beaches: seriously, December in particular was appaling, my local beach STANK for weeks: the cause? Wind. Tremendous, regular squalls of hundreds of kilometers a second (i think 197kps in dec) I KNOW this was the cause of our 'mystery bird deaths' as i was on the beach AT THE TME. it was horrible. the poor thngs slammed around like leaves: the gusts hit wthout warning: one minute, its about 9;30 pm, just dark, a little rain had just started when BANG i was thrown down a dune, sand was EVERYWHERE and what i first thought was rain was actually the ocean blowing sdeways in. i watched as birds hit the ground around me with sickening thumps: none i saw survived, none. was on sand, and i could hear thumps like it was cement. i was stuck in a relatively sheletered spot for thirty or so minutes with branches, bushes, sand and birds flung all around me.
These squalls hit without notice ANYWHERE in Australia, due to our unique weather system. they can be very localised, or very general, from near any direction too: i was blown across, then DOWN.
These are fragle species ( i have several cockatiels and parrots myself) and they can, do and will die if theyre knocked about in their sleep: they dont stand a chance when weve strpped out the natural homes through deforestation, leaving no real shelters for them from the wind: prime nests are kept for raising chicks, and the flock sleeps in the open, as we cut down all the 'dead' Trees the use.
Its not a mystery: its a consequence of US. WE DID THIS.