North American fauna . ont sezioni; abbastanza comune locallyin la sponda orientale e Western Shore sezioni (la maggior parte numerousin palude lungo il fiume Pocomoke e dei suoi affluenti, enella Greensand Distretto di East-central Prince Georges County-Vedere Harper, 1918; raro e irregolare altrove) ; raro trovanella Ridge e Valle sezione; rare o assenti nella parte superiore della Chesa-peake sezione. Transitori e svernamento: di solito piuttosto commonin tutte le sezioni, ma variando notevolmente in abbondanza dal yearto anno. Habitat.-flood-pianura e delle paludi e foreste; e umido di tipi deciduousforest sull'altopiano. Il Nesting

• Collaboratore: The Reading Room
• ID dell’immagine: 2AN9WY7
• Dimensioni dei file: 7,2 MB (298,7 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 2083 x 1200 px | 35,3 x 20,3 cm | 13,9 x 8 inches | 150dpi

Altre informazioni

Questa foto è un'immagine di pubblico dominio, il che significa che il copyright è scaduto o che il titolare del copyright ha rinunciato a tale diritto. Alamy addebita un costo per l'accesso alla copia ad alta risoluzione dell'immagine.

Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.

North American fauna . ont sections; fairly common locallyin the Eastern Shore and Western Shore sections (most numerousin the swamp along the Pocomoke River and its tributaries, andin the Greensand District of east-central Prince Georges County—see Harper, 1918; rare and irregular elsewhere) ; uncommon inthe Ridge and Valley section; rare or absent in the Upper Chesa-peake section. Transient and wintering: Usually fairly commonin all sections, but varying considerably in abundance from yearto year. Habitat.—Flood-plain and swamp forests; and moist deciduousforest types on the upland. Nesting season.—Late March to mid-July (nesting peak, mid-April to late May). Nest-building was recorded as early asMarch 31, 1894, in Baltimore County (P. T. Blogg). Extremeegg dates (11 nests) : April 7, 1894, in Baltimore County (P. T.Blogg) and May 17, 1881, in Washington County (Small, 1881b).Extreme nestling dates (11 nests) : April 30, 1948, in the Districtof Columbia (T. W. Donnelly) and June 10, 1956, in Garrett. LEGEND j| ii 1U Principal Range• Local Record Figure 39.—Breeding range of White-breasted Nuthatch. 11% NORTH AMERICAN FAUNA 62, FISH AND WILDLIFE SERVICE County (G. Knight). Nest-building was recorded as late asJune 1, 1935, in Allegany County (L. M. Llewellyn). Kirkwood(1895) recorded young just out of the nest as late as July 26, 1894. Spring migration.—Normal period: February 25-March 5 toApril 25-May 5; peak, March 5 to April 10. Fall migration.—Normal period: September 15-25 to No-vember 1-10; peak, October 10 to November 1. As early as thefirst week in July there frequently is a light movement of White-breasted Nuthatches into areas that are within 5 or 10 miles ofits nesting range. Breeding population densities (pairs per 100 acres).— 6 (2 in 36 acres) in virgin central hardwood forest (white oak-tulip-poplar)in Prince Georges County in 1947 (Stewart and Robbins, 1947b). 6 (5 in 80 acres) in central hardwood forest (oaks-tulip-poplar) with scat-

Parole chiave associate all'immagine

• bookauthorun
• bookcentury1800
• bookdecade1880
• booksubjectzoology