In interior Alaska and some parts of Canada, witches' broom (an abnormal outgrowth of branches of the tree resembling the sweeping end of a broom), is commonly seen on black and white spruce trees. From late fall through the winter, the brooms are dark brown or "dead"looking and are often mistaken for birds' and squirrels' nests.
AOL: The Fruit Tree That Will Attract Birds To Your Yard, Even In Winter
The Fruit Tree That Will Attract Birds To Your Yard, Even In Winter
Noticing a nest in a tree can motivate the mind to wonder about many things. Is it a bird nest or a squirrel nest? If a bird built the nest, what kind of bird was it? Why did the bird build its nest ...
The Conversation: After 10 years of work, landmark study reveals new ‘tree of life’ for all birds living today
The largest-ever study of bird genomes has produced a remarkably clear picture of the bird family tree. Published in the journal Nature today, our study shows that most of the modern groups of birds ...
After 10 years of work, landmark study reveals new ‘tree of life’ for all birds living today
Interior Alaskan forests have only six native tree species: white spruce, black spruce, quaking aspen, balsam poplar, larch (tamarack) and paper birch. Northern Canadian forests have all of those, plus jack pine, balsam fir and lodgepole pine. Since northern Canada and interior Alaska share the same grueling climate and extremes of daylength, why are the Canadian tree species absent from ...