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Titolo:
Growth patterns of Hawaiian Stilt chicks
Autore:
Reed, JM; Gray, EM; Lewis, D; Oring, LW; Coleman, R; Burr, T; Luscomb, P;
Indirizzi:
Univ Nevada, Biol Resources Res Ctr, Reno, NV 89557 USA Univ Nevada Reno NV USA 89557 Biol Resources Res Ctr, Reno, NV 89557 USA Univ Nevada, Reno, NV 89512 USA Univ Nevada Reno NV USA 89512Univ Nevada, Reno, NV 89512 USA US Fish & Wildlife Serv, Portland, OR 97232 USA US Fish & Wildlife Serv Portland OR USA 97232 erv, Portland, OR 97232 USA USN, Facil Engn Command, SW Div, San Diego, CA 92132 USA USN San Diego CAUSA 92132 Engn Command, SW Div, San Diego, CA 92132 USA
Titolo Testata:
WILSON BULLETIN
fascicolo: 4, volume: 111, anno: 1999,
pagine: 478 - 487
SICI:
0043-5643(199912)111:4<478:GPOHSC>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIRDS; RATES; ADAPTATION; HIMANTOPUS; WEIGHT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Reed, JM Tufts Univ, Dept Biol, Medford, MA 02155 USA Tufts Univ Medford MA USA 02155 Dept Biol, Medford, MA 02155 USA
Citazione:
J.M. Reed et al., "Growth patterns of Hawaiian Stilt chicks", WILSON B, 111(4), 1999, pp. 478-487

Abstract

We studied chick growth and plumage patterns in the endangered Hawaiian Stilt (Himantopus mexicanus knudseni). Body mass of captive chicks closely fit a Gompertz growth curve, revealing a growth coefficient (K) of 0.065 day(-1) and point of inflection (T) of 17 days. When chicks fledged about 28 days after hatching, they weighed only 60% of adult body mass; at 42 d, birdsstill were only 75% of adult mass; culmen, tarsus, and wing chord at hedging also were less than adult size. This trend of continued growth to adult size after fledging is typical for most shorebirds. After hatching, captivechicks grew more rapidly than wild chicks, probably because of an unlimited food supply. We found no evidence for adverse effects of weather on the growth of wild chicks. As with other shorebirds, the tarsus started relatively long, with culmen and then wing chord growing more rapidly in later development. Tarsal and wing chord growth were sigmoidal, whereas culmen growthwas linear. We describe plumage characteristics of weekly age classes of chicks to help researchers age birds in the wild.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:29:00