I think you're missing the point. Things don't "quietly die with dignity", they die because they either starve, get dehydrated, or stress overwhelmes them, or their injury prevents them being alive by causing organ failure. That's how people die too, but they're full of palliative drugs at the time and don't feel it.
Maybe I am. I'm not a great believer in progress I guess. (Not saying I wouldn't take the drugs if I was in the situation).
I was thinking more of the wider spectrum of wildlife/animals in general. eg nestlings die all the time due to poor weather -parents can't find the food. Parents killed. They go into a state of 'suspended animation' I believe eg Swifts etc??, or resting at least between feeds. They don't even know they've succombed. I may be wrong . . .
Some pet owners, if their animal is dying, but seems comfortable ( - operative word) allow them to die quietly.
A wild animal, injured, holes up, licks its wounds, makes it or doesn't make it. I guess that's the kind of dignity I'm thinking of. It doesn't get carted off to be dealt with somewhere, or get its neck wringed and put in a bin bag to go to landfill.
None of those scenarios are quick or nice (birds are vertebrates like us, and we know a lot about birds and stress), and all take time. Sometimes days.
Until we can communicate with birds or any other animal, we cannot know what they feel, even dogs or chimpamzees. But we can make good inferences:
Pain in Birds (can't vouch for this, don't know the journal)
Author: Gentle, M.J.
Source: Animal Welfare, Volume 1, Number 4, November 1992 , pp. 235-247(13)
Publisher: Universities Federation for Animal Welfare
Abstract:
For the detection and assessment of pain in animals both behavioural and physiological measurements are necessary. Cutaneous receptors which responded to noxious stimulation (nociceptors) have been identified in birds and have been characterized physiologically in the chicken. Following cutaneous nociceptive stimulation the chicken showed cardiovascular and characteristic behavioural changes consistent with those seen in mammals and indicative of pain perception. Following major burn trauma (partial beak amputation) there was behavioural and electrophysiological evidence for a pain-free period lasting several hours. This pain-free period was followed by pain-related behaviour with both anatomical and physiological evidence for long-term chronic pain.
While pain has been assessed following nociceptive stimulation and following trauma the painful consequences of chronic disease have not been investigated. Spontaneous degenerative joint disease is widespread in certain strains of intensively reared poultry, and while we do not know what effect joint degeneration has on the joint capsule receptors, recent work has shown in the joint capsule of birds there are similar receptor types to those found in mammals and it seems likely that joint degeneration in birds may be accompanied by painful sensations.
Experimental work has clearly detected painful conditions in birds but the alleviation of pain with analgesic drugs is not possible at present because analgesic agents have not been systematically investigated in birds.
Comparing pain in birds with mammals it is clear that, with regard to the anatomical, physiological and behavioural parameters measured, there are no major differences and therefore the ethical considerations normally afforded to mammals should be extended to birds.
But even in fish, which are more primitive (and a good journal):
The evidence for pain in fish: the use of morphine as an analgesic .
Applied Animal Behaviour Science , Volume 83 , Issue 2 , Page 153
L . Sneddon
This paper discusses the evidence for pain perception in fish and presents new data on morphine analgesia in fish. Recent anatomical and electrophysiological studies have demonstrated that fish are capable of nociception, the simple detection of a noxious, potentially painful stimulus and the reflex response to this. To prove pain perception, it must be demonstrated that an animal’s behaviour is adversely affected by a potentially painful event and this must not be a reflex response. The present study examined the acute effects of administering a noxious chemical to the lips of rainbow trout (Oncorhynchus mykiss) to assess what changes occurred in behaviour and physiology. There was no difference in swimming activity or use of cover when comparing the noxiously stimulated individuals with the controls. The noxiously treated individuals performed anomalous behaviours where they rocked on either pectoral fin from side to side and they also rubbed their lips into the gravel and against the sides of the tank. Opercular beat rate (gill or ventilation rate) increased almost double fold after the noxious treatment whereas the controls only showed a 30% increase. Administering morphine significantly reduced the pain-related behaviours and opercular beat rate and thus morphine appears to act as an analgesic in the rainbow trout. It is concluded that these pain-related behaviours are not simple reflexes and therefore there is the potential for pain perception in fish.
Cheers for that KN.
Anglers (and I know this isn't a fishing forum) are working on the principle that fish don't feel pain or that it doesn'y matter. Interesting. So yes, draw conclusions is fair in some respects, although I'd assume (may be wrong) that that part of the fish would be particularly sensitive to foreign substances/poisoning - they taste/smell with that portion of their anatomy.
On the chicken front, fair enough, although I think that the amount of pain felt will obviously relate to the amount of nerve endings in the area; the bill with its internal olfactory functions is going to be highly sensitive, and once the initial cauterisation numbing effect has worn off - yep, pain felt.
Not totally sure what that proves however. Not sure how many pain/sensory endings there are in the wing area.
Pain and suffering obviously are going to occur in birds, I guess it would be a bit silly to argue not or want to establish it was the case.
The degree of how much does have some relevence, but will differ eg in fledglings, different types of injuries etc. (However in a FULL discusion and analysis of care, treatment (including euthanasia) and handling of injured/abandoned birds it would have to be looked into at an early stage - working on incorrect assumptions could possibly follow otherwise).
There may be fuller significant work done on eg stress involved in fledglings starving to death etc etc. (Experiments like this etc all a fair bit distasteful if you want to stop and think about it of course . . . ). Anyway, moving on.