Tufted titmouse

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Tufted titmouse
Tufted Titmouse (189117409).jpeg
Tufted titmouse in winter
Call
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Paridae
Genus: Baeolophus
Species:
B. bicolor
Binomial name
Baeolophus bicolor
(Linnaeus, 1766)
Baeolophus bicolor map.svg
Approximate distribution map
  Year-round
Synonyms

Parus bicolorLinnaeus, 1766

The tufted titmouse (Baeolophus bicolor) is a small songbird from North America, a species in the tit and chickadee family (Paridae). The black-crested titmouse, found from central and southern Texas southward, [2] was included as a subspecies but now is considered a separate species, Baeolophus atricristatus. [3]

Contents

Taxonomy

The genus name Baeolophus translates to small crested and is a compound of the Ancient Greek words βαιός: baiós—"small", and λόφος: "lόphοs"—crest. The species name bicolor means two-colored.

Description

Measurements: [4]

These small birds have a white front and grey upper body outlined with rust colored flanks. Other characteristics include their black foreheads and the tufted grey crest on their heads. [5] In juveniles, the black forehead is greatly diminished such that they may be confused with the oak titmouse (although their ranges do not overlap). Males tend to be larger than females. [6]

The song of the tufted titmouse is usually described as a whistled peter-peter-peter, although this song can vary in approximately 20 notable ways. [7]

Distribution and habitat

Its habitat is deciduous and mixed woods as well as gardens, parks, and shrublands. Although the tufted titmouse is non-migratory and originally native to the Ohio and Mississippi River basins, factors such as bird feeders have caused these birds to occupy a larger territory across the United States and stretching into Ontario and Quebec in Canada. [5] [6] [8] During the second half of the 20th century and into the 21st century, the species' range has been expanding northwards. [4]

Behavior and ecology

The tufted titmouse gathers food from the ground and from tree branches, frequently consuming a variety of berries, nuts, seeds, small fruits, insects, and other invertebrates. [9] Caterpillars constitute a major part of its diet during the summer. This species is also a regular visitor to bird feeders. [10] Its normal pattern is to scout a feeder from cover, fly in to take a seed, then fly back to shelter to consume the morsel, though caching is also very common. [9] [11]

The titmouse can demonstrate curiosity regarding humans and sometimes will perch on a window ledge and seem to be peering into the house. It may also cling to the window frames and walls of buildings seeking prey in wasp and hornet nests.[ citation needed ]

Titmice are very vocal and will respond to sounds of agitation in other birds. [4] This species readily forms small flocks, known as troupes or banditries, which often associate with chickadees and other passerines when foraging. [12]

Breeding

Tufted titmice nest in a hole in a tree, either a natural cavity, a human-made nest box, or sometimes an old woodpecker nest. [13] They line the nest with soft materials, sometimes plucking hair from live mammals to use as material, a behavior known as kleptotrichy. [14] [15] If they find snake skin sheds, they may incorporate pieces into their nest. [16] Eggs measure under 1 inch (2.5 centimetres) long and are white or cream-colored with brownish or purplish spots. [17] Eggs have an incubation period of 12–14 days; titmice will then remain nestlings for 15–16 days. [4]

The lifespan of the tufted titmouse is approximately 2.1 years, although it can live for more than ten years. [18] On average, these birds will have a clutch size of five to seven eggs. [19] Unlike many birds, the offspring of tufted titmice will often stay with their parents during the winter and even after the first year of their life. [20] Sometimes, a bird born the year before will help its parents raise the next year's young. [21]

Tufted titmice will occasionally hybridize with the black-crested titmouse; the hybridization range is very narrow, however, because of genetic differences. [6]

Status

From 1966 to 2015 the tufted titmouse population has increased by more than 1.5% per year throughout the northeastern U.S. [22] The current breeding population is estimated to be approximately 8 million. [4]

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References

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  2. Kaufman, Kenn (13 November 2014). "Black-crested Titmouse". National Audubon Society . Retrieved 13 October 2019.
  3. Banks, Richard C.; Cicero, Carla; Dunn, Jon L.; Kratter, Andrew W.; Rasmussen, Pamela C.; Remsen, J. V.; Rising, James D.; Stotz, Douglas F. (1 July 2002). "Forty-Third Supplement to The American Ornithologists' Union Check-List of North American Birds". The Auk. 119 (3): 897–906. doi: 10.1093/auk/119.3.897 . Retrieved 13 October 2019.
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  6. 1 2 3 "Tufted Titmouse (Baeolophus bicolor) General Biology |" . Retrieved 18 February 2022.
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  12. Parnell, Marc (2022). Birds of Connecticut (The Birding Pro's Field Guides). Cleveland, Ohio: Naturalist & Traveler Press. pp. 214–215. ISBN   978-1-954228-27-6.
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  14. "Tufted Titmouse, Audubon Field Guide". 13 November 2014. Retrieved 17 August 2015.
  15. Pollock, Henry S.; MacDonald, Sean E.; Vizentin-Bugoni, Jeferson; Brawn, Jeffrey D.; Sutton, Zachary S.; Hauber, Mark E. (2021). "What the pluck? Theft of mammal hair by birds is an overlooked but common behavior with fitness implications". Ecology. 102 (12): e03501. Bibcode:2021Ecol..102E3501P. doi:10.1002/ecy.3501. PMID   34314035. S2CID   236453003 via Wiley Online Library.
  16. Medlin, Elizabeth C.; Risch, Thomas S. (2006). "An Experimental Test Of Snake Skin Use To Deter Nest Predation". The Condor. 108 (4): 963. doi: 10.1650/0010-5422(2006)108[963:aetoss]2.0.co;2 . ISSN   0010-5422. S2CID   86039366.
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  19. Laskey, Amelia R. (July 1957). "Some Tufted Titmouse Life History" (PDF). Bird-Banding. 28 (3): 135–145. doi:10.2307/4510633. JSTOR   4510633 via ProQuest.
  20. Pravosudova, Elena V.; Grubb, Thomas C.; Parker, Patricia G.; Doherty, Paul F. (1999). "Patch Size and Composition of Social Groups in Wintering Tufted Titmice". The Auk. 116 (4): 1152–1155. doi:10.2307/4089699. JSTOR   4089699.
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  22. "Tufted & Black-crest. Titmou Baeolophus bicolor/atricrista". Patuxent Wildlife Research Center. U.S. Geological Survey. Retrieved 2 January 2019.