This video says about itself:
Through the Lens: Acorn Woodpecker
23 April 2011
The Acorn Woodpecker is a favorite among bird watchers. It has a clown like appearance and the unique habit of storing acorns in a favored tree that is often used by generations of birds. Wildlife Photographer Marie Read shares her experience photographing the behaviors of these lively birds.
Learn more about Acorn Woodpeckers on All About Birds.
From PLOS one:
The Geographic Distribution of a Tropical Montane Bird Is Limited by a Tree: Acorn Woodpeckers (Melanerpes formicivorus) and Colombian Oaks (Quercus humboldtii) in the Northern Andes
Benjamin G. Freeman, Nicholas A. Mason
June 17, 2015
Species distributions are limited by a complex array of abiotic and biotic factors. In general, abiotic (climatic) factors are thought to explain species’ broad geographic distributions, while biotic factors regulate species’ abundance patterns at local scales
We used species distribution models to test the hypothesis that a biotic interaction with a tree, the Colombian oak (Quercus humboldtii), limits the broad-scale distribution of the Acorn Woodpecker (Melanerpes formicivorus) in the Northern Andes of South America. North American populations of Acorn Woodpeckers consume acorns from Quercus oaks and are limited by the presence of Quercus oaks. However, Acorn Woodpeckers in the Northern Andes seldom consume Colombian oak acorns (though may regularly drink sap from oak trees) and have been observed at sites without Colombian oaks, the sole species of Quercus found in South America
We found that climate-only models overpredicted Acorn Woodpecker distribution, suggesting that suitable abiotic conditions (e.g. in northern Ecuador) exist beyond the woodpecker’s southern range margin. In contrast, models that incorporate Colombian oak presence outperformed climate-only models and more accurately predicted the location of the Acorn Woodpecker’s southern range margin in southern Colombia.
These findings support the hypothesis that a biotic interaction with Colombian oaks sets Acorn Woodpecker’s broad-scale geographic limit in South America, probably because Acorn Woodpeckers rely on Colombian oaks as a food resource (possibly for the oak’s sap rather than for acorns). Although empirical examples of particular plants limiting tropical birds’ distributions are scarce, we predict that similar biotic interactions may play an important role in structuring the geographic distributions of many species of tropical montane birds with specialized foraging behavior.
Reblogged this on Coalition for American Wildbirds.
Pingback: California condor nest webcam on the Internet | Dear Kitty. Some blog
Pingback: Acorn woodpecker, hummingbirds at Texas feeder, video | Dear Kitty. Some blog
Pingback: Woodpeckers at Texas hummingbird feeder | Dear Kitty. Some blog
Pingback: New frog species discovered in Colombia | Dear Kitty. Some blog
Pingback: Birds nesting in California, new research | Dear Kitty. Some blog
Pingback: Acorn woodpecker at Texas hummingbird feeder | Dear Kitty. Some blog
Pingback: Birds and children in Colombia | Dear Kitty. Some blog
Pingback: Beefsteak polypore, 2017 Fungus of the Year | Dear Kitty. Some blog
Pingback: Wood mouse uncovers acorn | Dear Kitty. Some blog