Friday, July 04, 2008

Birds From a Cariboo Deck No.8: Evening Grosbeak



Those of you living in Douglas fir territory might have noticed flocks of these birds from time to time, especially if you have a feeder with good supply of black sunflower seeds. Apparently they tend to follow the outbreaks of spruce budworm (right). These are the worms that descend from the higher branches on a thread of silk, until they land on lower branches where they begin to feed on the tender shoots and buds of their host; or on bare ground, where they usually die. The grosbeaks are no doubt one of an array of natural controls and they seem to enjoy chasing the moths too.

Spruce Budworm

For more on Cariboo birds, see my Birds from a Cariboo Deck

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