Sicks Swift (Chaetura andrei) Science Article 1 abstract On the middle Rio das Mortes (15 o S., 52 o 15′ W. Greenwich), Mato Grosso, Brazil, I frequently observed a swift that inhabited principally the extensive groves of ‘buritf’ palms. On October 15, 1946, I located two nests of the species. One was torn from its […]
Gonadal status upon spring arrival in long-distance and short-distancemigrating stonechats ( Saxicola torquata)
Siberian Stonechat (Saxicola maura) Science Article 1 abstract Long-distance migration is often associated with relatively short breeding seasons and a start of reproductive activities shortly after arrival. The full activation of the reproductive system from the regressed state takes, however, several weeks and must, therefore, be initiated in the winter quarters or during spring migration. […]
Slow pace of life in tropical sedentary birds:a common-garden experiment on four stonechatpopulations from different latitudes
Siberian Stonechat (Saxicola maura) Science Article 2 abstract It has been hypothesized that organisms living at different latitudes or in different environments adjust their metabolic activity to the prevailing conditions. However, do differences in energy turnover simply represent a phenotypic adaptation to the local environment, or are they genetically based? Martin Wikelski, Proc. R. Soc. […]
The structure of aerial displays in three species of calidridinae (scolopacidae)
Semipalmated Sandpiper (Calidris pusilla) Science Article 1 abstract Sandpipers in the subfamily Calidridinae (Scolopacidae) breed in the Arctic and Subarctic. In all species, unpaired males engage in distinctive aerial displays. Such displays are described for three species: Dunlin (Calidris alpina L.), Semipalmated Sandpiper (Calidris pusilla L.), and Stilt Sandpiper(Calidris himantopus Bonaparte). EDWARD H. MILLER, The […]
Site Safety and Food Affect Movements of Semipalmated Sandpipers(Calidris pusilla) Migrating Through the Upper Bay of Fundy
Semipalmated Sandpiper (Calidris pusilla) Science Article 2 abstract The upper Bay of Fundy is a critical stopover site for Semipalmated Sandpipers (Calidrispusilla) during their fall migration. However, little is known about factors that influence selection of feeding and roosting sites by these birds, or the extent to which birds move between different sites during their […]
Body mass and acquisition of breeding plumage of wintering Calidris pusilla in the coast of Pernambuco, north-eastern Brazil.
Semipalmated Sandpiper (Calidris pusilla) Science Article 4 abstract No abstract Fedrizzi, C.E., S.M. de Azevedo Jr, and M.E.L. de Larrazabal, Revista Brasileira de Zoologia 21:249-252. Download article download full text (pdf)
Incubation capacity and clutch size determinationin two calidrine sandpipers: a test of the four-egg threshold
Semipalmated Sandpiper (Calidris pusilla) Science Article 3 abstract Several groups of vertebrate taxa, including shorebirds, are unusual in that they produce a x number of offspring. The aim of this study was to examine whether the incubation capacity of western sandpipers (Calidris mauri) and semipalmated sandpipers (C. pusilla) limits their maximum clutch size to four […]
The Rufous-Rumped Antwren (Terenura callinota) in Costa Rica
Rufous-rumped Antwren (Terenura callinota) Science Article 1 abstract Rufous-rumped Antwren (Terenura callinota) has a wide distribution from southern Middle America to Guyana and Peru, but is known chiefly from a handful of specimens from widely scattered localities. GARY STILES, Wilson Bulletin: Vol. 95, No. 3 Download article download full text (pdf)
Ecological aspects of migration, and pre-migratory fat deposition in the lesser redpoll, Carduelis flammea cabaret
Redpoll (Carduelis flammea) Science Article 3 abstract This paper is a sequel to an earlier paper on the Lesser Redpoll (Evans 1966a), in which I discussed the timing of its annual (post-nuptial) molt in relation to the timing of breeding and autumn migration and described variations in the total weights of birds during late summer […]
A pair of the Redpoll Carduelis flammea with two clutches in Finnmark, North Norway
Redpoll (Carduelis flammea) Science Article 2 abstract On 21 July 1999 I found, together with Per J. Tommeraas, a nest of the Redpoll Carduelis flammea with four eggs 4 m high up in a birch at Virdnejavvri in the Alta-Kautokeino water system in Finnmark, North Norway, north of the Arctic Polar Circle. The nest was […]