Fresh AfieldMore posts

Consider the Goldfinch

Aug 07, 2009

GoldfinchWhen I looked at the Natural Events Calendar on my office wall today, the event for Aug. 7 was “Goldfinches begin nesting as thistles go to seed.” It seemed late in the year for a bird to begin nesting, so I looked up some more information on the habits of the American goldfinch, which I found interesting.

Goldfinches are one of the latest nesting bird species in Missouri, with their reproduction tied closely to the fruiting of thistles. The link between goldfinches and thistles is evident, even in the Latin name for the bird (Carduelis tristis), because Carduus is a genus of thistles. Goldfinches eat thistle seeds and use the downy fruits to line their nests, sometimes using caterpillar or spider silk to bind its edges. The nests are so tightly woven that they reportedly will hold water.

Goldfinches are almost exclusively seed eaters, apparently able to get all of their protein needs from their seed diet. Many of their food plants are in the sunflower family. The birds have a rudimentary crop that allows them to accumulate some undigested food. The chicks are fed a sticky mass of seed pulp that the adults regurgitate to the young. Although the brown-headed cowbird will lay its eggs in goldfinches’ nests, it is rare that a cowbird chick will survive to leave the nest, probably because the cowbird chick cannot thrive on a diet of virtually all seeds.

GoldfinchAs winter approaches, the bright yellow plumage of the male goldfinch will give way to its muted winter colors. Goldfinches will frequent bird feeders year round, enjoying niger and sunflower seeds. Native plant gardeners often leave standing over the winter the fruiting stalks of coneflowers and other seed bearing plants as food supplies for goldfinches and other seed-eating birds.

Recent Posts

hiking

Hiking for Health and Happiness

Oct 13, 2019

Hike your way to health and happiness with this week's Discover Nature Note.

Bobcat

What About Bobcat?

Oct 06, 2019

What About Bobcat? No baby steps needed for these stealthy creatures that can climb, pounce, and swim. Learn more in this week's Discover Nature Note.

Persimmon

Fall's Tasty Treat

Sep 30, 2019

Eat them green and you'll pucker up like a sunfish. Gather them ripe before the raccoons, and you'll enjoy Missouri's tastiest fall treat-- perfect for pies, breads, and puddings. Persimmons are a homegrown favorite. Discover more including recipes, and what sports use the wood in this week's Discover Nature Note.