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March 4 Information
How much meat do parrots eat in the wild?
Anyone know? Have seen pet Amazon parrots stripping meat and marrow from chicken bones. Judging by the happy trilling noises and eye flaring, they really love it. Supposed to be good for them on an occasional basis. — Preceding
unsigned comment added by
146.90.140.98 (
talk)
07:47, 4 March 2020 (UTC)reply
Obviously it will depend on the species (there are almost 400 species of parrot) and the availability of meat. Our
Parrot article provides some info in the section
Diet: "The diet of parrots consists of
seeds,
fruit,
nectar,
pollen,
buds, and sometimes
arthropods and other animal prey. ... Some parrot species prey on animals, especially invertebrate larvae.
Golden-winged parakeets prey on water
snails, the New Zealand
kea can, though uncommonly, hunts adult sheep, and the
Antipodes parakeet, another New Zealand parrot, enters the burrows of nesting
grey-backed storm petrels and kills the incubating adults. Some cockatoos and the
New Zealand kaka excavate branches and wood to feed on grubs; the bulk of the
yellow-tailed black cockatoo's diet is made up of insects. ... Some extinct parrots had carnivorous diets.
Pseudasturids were probably
cuckoo- or
puffbird-like insectivores, while
messelasturids were
raptor-like carnivores." (For references see the article.) In general seeds seem to remain the most important; a meat-only diet will probably lead to malnutrition (see also
Rabbit starvation). --
Lambiam11:01, 4 March 2020 (UTC)reply
dual mono to stereo, audio adapter
I have two audio sources. each provides mono audio, via a TRS jack. I need a stereo audio output, via a TRRS jack. one source each for the left and right channels. (1) can this adapter work without active power? (2) what is the name of this device? thanks! --
14.194.231.184 (
talk)
16:12, 4 March 2020 (UTC)reply
The simplest passive mixer, to mix two signals onto one signal
If that's all that you need, then a very simple passive adapter can do it. It doesn't even need any resistors to sum the signals (to mix two mono signals onto one, you'd use a Y network of resistors, like the diagram).
I don't know of a source for one ready-made, but you could make one by soldering. The easiest way might be to get an existing adapter, chopping the cores open in the cable (with a scalpel, to try and leave the screens intact) and then isolating one side and crossing the other side over in the other connector. Then pot the joint up under some
Sugru or
self-amalgamating tape.
I don't know what the pinouts are for TRRS (stereo) and TRS (mono). You'd have to confirm that for your particular device.
You should also check that the levels are suitable. You might need to make a passive mixer circuit (a few resistors and a couple of trimmers) because the levels are unlikely to be quite right, as they arrive – one is likely to be much louder and need balancing.
It seems you are describing a TRRS stereo breakout cable. It has TRRS female going to two TRS males. The left/right signal is broken out to the two males. It is a very common adapter.
135.84.167.41 (
talk)
18:44, 4 March 2020 (UTC)reply
If they make such a thing, you could use one in reverse and that would work fine. Do you have a source for one? I've not seen one.
This is similar, but it's splitting the mic to one socket and the headphone output to the other – I think the OP is looking for something very similar, but splitting left and right.
Andy Dingley (
talk)
19:02, 4 March 2020 (UTC)reply
OK, as Our Friend In Guildford can't leave my email alone, let me explain.
The 4-connection TRRS plug & socket is defined for three different systems, with different pin allocations. The originals were for video and are unidirectional. More recent ones are common on cellphones, but (as always) there are two standards: "the world" (
OMTP) and Apple iPhones doing it differently (
CTIA). The old PC standard for gaming headsets is the same as Apple. See
[2] for pictures. Note that both of them are designed so that plugging in a standard TRS stereo (but unidirectional) headphone jack will connect correctly to the furthest connections for audio output, and short the microphone input to ground, for silence.
I don't know what a "mono TRS" connection is, I guess you actually mean a mono jack with TS alone. However connecting to the left terminal (usually white) of a stereo TRS jack (leaving the red Ring unconnected) will probably do what you need.
Andy Dingley (
talk)
19:22, 4 March 2020 (UTC)reply
Welcome to the Wikipedia Science Reference Desk Archives
The page you are currently viewing is a
transcluded archive page. While you can leave answers for any questions shown below, please ask new questions on one of the
current reference desk pages.
March 4 Information
How much meat do parrots eat in the wild?
Anyone know? Have seen pet Amazon parrots stripping meat and marrow from chicken bones. Judging by the happy trilling noises and eye flaring, they really love it. Supposed to be good for them on an occasional basis. — Preceding
unsigned comment added by
146.90.140.98 (
talk)
07:47, 4 March 2020 (UTC)reply
Obviously it will depend on the species (there are almost 400 species of parrot) and the availability of meat. Our
Parrot article provides some info in the section
Diet: "The diet of parrots consists of
seeds,
fruit,
nectar,
pollen,
buds, and sometimes
arthropods and other animal prey. ... Some parrot species prey on animals, especially invertebrate larvae.
Golden-winged parakeets prey on water
snails, the New Zealand
kea can, though uncommonly, hunts adult sheep, and the
Antipodes parakeet, another New Zealand parrot, enters the burrows of nesting
grey-backed storm petrels and kills the incubating adults. Some cockatoos and the
New Zealand kaka excavate branches and wood to feed on grubs; the bulk of the
yellow-tailed black cockatoo's diet is made up of insects. ... Some extinct parrots had carnivorous diets.
Pseudasturids were probably
cuckoo- or
puffbird-like insectivores, while
messelasturids were
raptor-like carnivores." (For references see the article.) In general seeds seem to remain the most important; a meat-only diet will probably lead to malnutrition (see also
Rabbit starvation). --
Lambiam11:01, 4 March 2020 (UTC)reply
dual mono to stereo, audio adapter
I have two audio sources. each provides mono audio, via a TRS jack. I need a stereo audio output, via a TRRS jack. one source each for the left and right channels. (1) can this adapter work without active power? (2) what is the name of this device? thanks! --
14.194.231.184 (
talk)
16:12, 4 March 2020 (UTC)reply
The simplest passive mixer, to mix two signals onto one signal
If that's all that you need, then a very simple passive adapter can do it. It doesn't even need any resistors to sum the signals (to mix two mono signals onto one, you'd use a Y network of resistors, like the diagram).
I don't know of a source for one ready-made, but you could make one by soldering. The easiest way might be to get an existing adapter, chopping the cores open in the cable (with a scalpel, to try and leave the screens intact) and then isolating one side and crossing the other side over in the other connector. Then pot the joint up under some
Sugru or
self-amalgamating tape.
I don't know what the pinouts are for TRRS (stereo) and TRS (mono). You'd have to confirm that for your particular device.
You should also check that the levels are suitable. You might need to make a passive mixer circuit (a few resistors and a couple of trimmers) because the levels are unlikely to be quite right, as they arrive – one is likely to be much louder and need balancing.
It seems you are describing a TRRS stereo breakout cable. It has TRRS female going to two TRS males. The left/right signal is broken out to the two males. It is a very common adapter.
135.84.167.41 (
talk)
18:44, 4 March 2020 (UTC)reply
If they make such a thing, you could use one in reverse and that would work fine. Do you have a source for one? I've not seen one.
This is similar, but it's splitting the mic to one socket and the headphone output to the other – I think the OP is looking for something very similar, but splitting left and right.
Andy Dingley (
talk)
19:02, 4 March 2020 (UTC)reply
OK, as Our Friend In Guildford can't leave my email alone, let me explain.
The 4-connection TRRS plug & socket is defined for three different systems, with different pin allocations. The originals were for video and are unidirectional. More recent ones are common on cellphones, but (as always) there are two standards: "the world" (
OMTP) and Apple iPhones doing it differently (
CTIA). The old PC standard for gaming headsets is the same as Apple. See
[2] for pictures. Note that both of them are designed so that plugging in a standard TRS stereo (but unidirectional) headphone jack will connect correctly to the furthest connections for audio output, and short the microphone input to ground, for silence.
I don't know what a "mono TRS" connection is, I guess you actually mean a mono jack with TS alone. However connecting to the left terminal (usually white) of a stereo TRS jack (leaving the red Ring unconnected) will probably do what you need.
Andy Dingley (
talk)
19:22, 4 March 2020 (UTC)reply