Photography of Birds – Set # 273

Set # 273


Mourning Dove


Mourning Dove (Leucitic)
Mourning Dove (Leucitic)

To resolve the confusion over the binomial names of the two species, Francis Hemming proposed in 1952 that the International Commission on Zoological Nomenclature (ICZN) secure the specific name macroura for the Mourning Dove and migratorius for the passenger pigeon, since this was the intended use by the authors on whose work Linnaeus had based his description. This was accepted by the ICZN, which used its plenary powers to designate the species for the respective names in 1955.


Northern Mockingbird (Juv.)


Northern Mockingbird  (Juv.)
Northern Mockingbird (Juv.)

The Northern Mockingbird’s habitat varies by location, but it prefers open areas with sparse vegetation. In the eastern regions, suburban and urban areas such as parks and gardens are frequent residential areas. It has an affinity for mowed lawns with shrubs within proximity for shade and nesting. In western regions, desert scrub and chaparral are among its preferred habitats. When foraging for food, it prefers short grass. This bird does not nest in densely forested areas, and generally resides in the same habitats year round.


© HJ Ruiz – Avian101

Photography of Birds – Set # 272

Set # 272


Blue Grosbeak


Blue Grosbeak
Blue Grosbeak (M)

Some taxonomists placed the Blue Grosbeak in its own monotypic genus Guiraca but in 2001 a molecular phylogenetic study of mitochondrial DNA sequences found that the blue grosbeak, in spite of being physically larger, nested within the Passerina and was most closely related to the lazuli bunting. The species is therefore now placed with the North American buntings in Passerina, a genus that was introduced by the French ornithologist Louis Jean Pierre Vieillot in 1816.


Eastern Bluebird


Eastern Bluebird (F)
Eastern Bluebird (F)

Both parents cooperate in raising the young, which they feed a diet consisting almost entirely of insects. Some young stay around the nest to help raise another brood. Fledglings are grayish in color, with speckled breasts. The blue color becomes much more prominent and the speckles on their breasts disappear as they mature. Bluebirds may begin breeding the summer after they are hatched.


© HJ Ruiz – Avian101

Framed Memories # 45

Photo Gallery


Mallard Duck (F)

House Finch (M)

© HJ Ruiz – Avian101

Photography of Birds – Set # 271

Set # 271


American Robin


American Robin
American Robin (M)

The American Robin bird breeds throughout most of North America, from Alaska and Canada southward to northern Florida and Mexico. While robins occasionally overwinter in the northern part of the United States and southern Canada, most migrate to winter south of Canada from Florida and the Gulf Coast to central Mexico, as well as along the Pacific Coast.


Eastern Towhee


Eastern Towhee (M)
Eastern Towhee (M)

Eastern towhees seem to prefer sites with characteristics generally associated with early successional vegetation, such as low canopy cover and dense understory. Negative correlations between eastern towhee abundance and various measurements of overstory density have been found in several studies. Average density of eastern towhees across 6 habitat types in Pennsylvania was significantly (p<0.05) negatively correlated with density of overstory trees and basal area of overstory trees.


© HJ Ruiz – Avian101

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