Birds on sports fields

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ledzep
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Birds on sports fields

Postby ledzep » Tue Jul 20, 2021 2:03 pm

I go past the sports field opposite the Lady Norwood Rose Gardens in Wellington botanic gardens most days of the week. A few years ago there used to be lots of birds on the field - 80 - 90 blackbirds, one or two Song Thrush, sparrows, feeding. In the past year there is only a handful of birds - 3 or 4 blackbirds, still the odd Song Thrush, and maybe a sparrow or two. With occasional visits of 2 - 4 Magpies. My question is, do they put something on the sports fields to discourage birds feeding, or has something else decimated the population of Blackbirds (eg the Falcon's which are more frequent in the area)?
Colin Miskelly
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Re: Birds on sports fields

Postby Colin Miskelly » Tue Jul 20, 2021 3:53 pm

My vote is a nasty toxin killing the invertebrate fauna. There wasn't a blackbird to be seen on several hectares of waterlogged sports fields at Liardet Street Park (Berhampore, Wellington) on Sunday, but nearby smaller grass areas not used for sport had blackbirds at their usual density.

Ngā mihi
Colin
Last edited by Colin Miskelly on Wed Jul 21, 2021 11:16 am, edited 1 time in total.
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ledzep
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Re: Birds on sports fields

Postby ledzep » Tue Jul 20, 2021 4:00 pm

That would make sense. The few birds seem to be near the fence line rather than the middle of the field, perhaps where whatever toxins are on the field haven't killed so many insects in the ground.
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Steps
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Re: Birds on sports fields

Postby Steps » Wed Jul 21, 2021 8:56 am

Could be the selective broad leaf weed killers. Pretty sure they effect bees, so most likely also effect other ground insects.
Maybe also partly explain why we dont see the huge numbers of sea bird on playing fields during storms, anymore?
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Jan
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Re: Birds on sports fields

Postby Jan » Wed Jul 21, 2021 9:11 am

The grassy basins designed to hold back stormwater and filter it slowly into streams around SW Chch, not being used for sports fields, so not sprayed, I guess; do have masses of gulls, SWPlover and other birds feasting on worms etc.

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