A History of North American Birds Land Birds

Dr. Woodhouse, who frequently observed this bird skimming over the prairies while in search of its prey, states that its flight is so peculiar that there is no difficulty in recognizing it, when taken in connection with its form, ...

A History of North American Birds  Land Birds


A Land Manager s Guide to Point Counts of Birds in the Southeast

Status and management of neotropical migratory birds : proceedings of workshop ; 1992 September 21–25 ; Estes Park , CO . ... Neotropical migratory landbird species and their habitats of special concern within the Southeast Region .

A Land Manager s Guide to Point Counts of Birds in the Southeast


Land birds

Like most of our summer visitants , the arrival of the male bird precedes that of the other sex by a week or ten days . - As soon as a proper situation is found , he commences his song of invitation , which , Song . though possessing ...

Land birds


British Land Birds

British land birds . lost from our sight ; yet so powerful his voice , that its wild ecstatic strain , filling the air with glad melody , is heard distinctly when the strained eye can follow its course no longer .

British Land Birds


A History of North American Birds Land Birds

In its terrestrial movements this bird is shown to be quite at home, while other Warblers, when driven by necessity to feed upon the ground, are awkward, and manifest a want of adaptation. Dr. Henry Bryant, another very close and ...

A History of North American Birds  Land Birds


A History of North American Birds Land Birds Volume 2

To Mr. Nuttall's account Mr. Townsend adds that this bird is strictly gregarious, that it feeds on the ground, around which it runs in the manner of the Grass Finch, to which, in its habits, it seems to be somewhat allied.

A History of North American Birds  Land Birds  Volume 2


Containing the history and description of land birds

It is much to be regretted , however , that the means taken to preserve this valuable bird should in a variety of instances , prove its destruction : the proper guardians of the eggs and young ones , tied down by ungenerous restrictions ...

Containing the history and description of land birds


History and description of land birds

then very fat , being almost constantly on the ground , feeding in great flocks ; whereas in summer they are very lean ; they then always go in pairs , eat sparingly , and sing incessantly while on the wing . THE FIELD LARK .

History and description of land birds


Illustrations of British Ornithology Land birds

It skims along the surface of the ground , like the Hen Harrier , but with more rapid flight , and more strikingly buoyant . Lives upon small birds , lizards , frogs , & c . Its Food . nest is placed upon the ground , amongst furze or ...

Illustrations of British Ornithology  Land birds


Memorial Edition of Thomas Bewick s Works Land birds

It is much to be regretted , however , that the means taken to preserve this valuable bird should , in a variety of instances , prove its destruction ; the proper guardians of the eggs and young ones , tied down by ungenerous ...

Memorial Edition of Thomas Bewick s Works  Land birds


Census Methods for Caribbean Land Birds

... use of nets strung in the canopy , involving a complex of cords , pulleys , and poles to raise the nets high off the ground . ... Nets in the sun in lowland areas should be routinely checked and cleared of birds every 10 minutes .

Census Methods for Caribbean Land Birds


Birdcraft

A Field Book of Two Hundred Song, Game, and Water Birds Mabel Osgood Wright. guarded reefs , where the Gulls flock and the Petrels dash in the wake of cautious ships , its arms reaching landward until the bay , where the Wild Ducks ...

Birdcraft


Birds of Prey

THE GOLDEN EAGLE . home of the Eagle is far away in the “ There's a fierce gray bird with a bending beak , wilderness . ... They bring rabbits , geese , cranes , kids , “ He is a land bird , " said Cousin lambs , and lay them on that ...

Birds of Prey


Stopover Ecology of Landbirds Migrating Along the Middle Rio Grande in Spring and Fall

Table 10 — Age composition of landbirds captured during fall migration at Bosque National Wildlife Refuge ( BNWR ) and Rio Grande Nature Center ( RGNC ) . Only species with > 20 captures at each site were included .

Stopover Ecology of Landbirds Migrating Along the Middle Rio Grande in Spring and Fall

This research represents the first comprehensive summary of our study of stopover ecology of migratory landbirds in riparian habitats along the middle Rio Grande of central New Mexico. We report results from mist-netting operations conducted during spring and fall migration in 1994, 1995, and 1996. A total of 23,800 individuals of 146 species were captured during the study. Of the 146 species, 53 percent were Neotropical migrants, and 32 percent were temperate migrants. The most abundant species were the MacGillivray's Warbler, Wilson's Warbler, and White-crowned Sparrow in spring and the Chipping Sparrow, Pine Siskin, and White-crowned Sparrow in fall. Migrants were most abundant between late April and the first 2 weeks of May in spring and between the last week of August and mid-October. Temperate migrants passed through the sites earlier in spring and later in fall than Neotropical migrants. About 50 percent of the birds had no visible fat stores upon capture. More birds used riparian habitat along the middle Rio Grande for stopover in fall than in spring. Species richness and relative abundance were lower in spring (108 species, 4,673 birds) than in fall (125 species, 19,127 birds). In addition to the influx of hatching-year birds in fall, differential use of migratory routes by landbirds in spring and fall may explain the seasonal difference in capture rate. We recaptured 2,875 birds (12 percent of the total captures) after the day of initial capture. Energetic condition and migratory status affected recapture probability: birds with low fat stores were more likely to stay overnight, and Neotropical species had shorter stopovers than temperate migrants and residents. The average rate of body mass gain across all species was 7.46 plus/minus 0.10 percent/day in spring and was 4.68 plus/minus 0.05 percent/day in fall, suggesting that migrants were not only able to gain energy for regular metabolic needs, but also for accumulating fat stores for migration. The capture rate was highest in willow habitat (288 birds/1,000 net hour) in spring and in agricultural field/edge habitat (718 birds/1,000 net hour) in fall. Cottonwood with Russian olive understory had the highest species richness in spring (80 species) and in fall (94 species). Saltcedar habitat had lowest species richness both in spring (26 species) and in fall (33 species). Detrended correspondence analysis of spring migration data separated species with high abundance in saltcedar from species with high capture rates in cottonwood overstory habitats, and in agriculture and willow habitats. The same analysis for fall data separated species with high capture rates in habitats dominated by agriculture, willow, saltcedar, and cottonwood. Species composition was most similar between agricultural habitat and cottonwood/Russian olive habitat in spring and among habitats with cottonwood as overstory in fall. During fall migration, about 60 percent of the birds captured were immatures. Body masses of adult birds were generally higher than those of immature birds, and young birds were more likely to be fat-depleted when they captured at our sites. The rate of mass gain was similar between immatures and adults. Our study confirms that riparian habitats along the middle Rio Grande of central New Mexico are important stopover sites during spring and fall migration for birds that breed in New Mexico, its adjacent States, and at a much larger geographic scale. Habitat loss and disturbance along the middle Rio Grande could affect not only local breeding landbird populations, but also many Neotropical and temperate migratory individuals that may use the area for only a few days each migration season.

Memorial Edition of Thomas Bewick s Works Water birds

Like the Rails , these birds frequent fresh waters , swimming and diving with the same ease , and running on land with similar velocity . They feed likewise in the same manner , on insects and vegetable substances .

Memorial Edition of Thomas Bewick s Works  Water birds


Contributions to Biology

Comparing the land birds with the water birds as hosts for Mallophaga , I find that many more individuals among land birds than among water birds are free from parasites , and that among the infested birds the number of individuals of ...

Contributions to Biology

Reprints from various scientific periodicals.

Contributions to Biology from the Hopkins Seaside Laboratory

Comparing the land birds with the water birds as hosts for Mallophaga , I find that many more individuals among land birds than among water birds are free from parasites , and that among the infested birds the number of individuals of ...

Contributions to Biology from the Hopkins Seaside Laboratory