[MENTION=418370]canklecat[/MENTION], your photo reminds me of the time I crossed a busy CT road on foot and there in the crosswalk was a Baltimore Oriole. It looked perfect, lying there, but was going to get smashed by the next car. It was the first and only Baltimore Oriole I've ever seen, so much bigger than a goldfinch, and it seemed a shame for it to get destroyed, even though I assumed it was dead. So very irrationally I tried to nudge it over to the side of the road with my foot.
As soon as my foot touched it, it stood up, shook out its feathers, and flew away.
Heh! Last week I tangled with a small bird, probably a sparrow or starling. Darted out of the brush at wheel level, got whirled around in the wheel, then squirted out the other side. I checked the mirror for cyclists behind me and slowed to turn around, but in the mirror I could see the little bird shake it's head and fly away.
Birds are both remarkably fragile and tough. If you've ever tried to rescue wild birds, especially babies, you've probably experienced a 90% failure rate. They rarely recover or survive. My only successes have been with injured adult grackles, among the toughest of birds.
And birds tend to go full power until they suddenly drop dead with few warning signs of illness. I've kept many pet birds, especially cockatiels, and only one ever showed any signs of illness before it died. The rest seemed perfectly fine, then dropped dead off their perches. Probably a defense mechanism to make it difficult for predators to isolate a weak bird.