All that glitters
We had another hoar frost today, perhaps the -20c (-4F) temperature had something to do with it.
The birds were swarming our feeders, desperate for a morning feed.
This is an American Tree Sparrow.
Spizella arborea
American Tree Sparrows need to take in about 30 percent of their body weight in food and a similar percentage in water each day. A full day's fasting is usually a death sentence. Their body temperature drops and they lose nearly a fifth of their weight in that short time.
The longevity record among banded American Tree Sparrows is 10 years 9 months.
Source - The Cornell Lab of Ornithology.
The birds were swarming our feeders, desperate for a morning feed.
This is an American Tree Sparrow.
Spizella arborea
American Tree Sparrows need to take in about 30 percent of their body weight in food and a similar percentage in water each day. A full day's fasting is usually a death sentence. Their body temperature drops and they lose nearly a fifth of their weight in that short time.
The longevity record among banded American Tree Sparrows is 10 years 9 months.
Source - The Cornell Lab of Ornithology.
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