Zobrazeno 1 - 7
of 7
pro vyhledávání: '"F. G. Stiles"'
Autor:
F. G. Stiles, C. E. Freeman
Publikováno v:
Biotropica. 25:191
Nectar samples from a wide range of flowers (120 samples, 112 species, 22 families) visited by hummingbirds (subfamilies Phaethorninae and Trochilinae) were collected over a wide range of elevations and environments in Costa Rica. Some species visite
Autor:
F. G. Stiles, P. J. DeVries
Publikováno v:
Biotropica. 22:290
Epidendrumpaniculatum orchids are pollinated by male, diurnal Lepidoptera that seek pyrrolizidine alkaloids, especially ithomiine butterflies. Experiments suggest that scent attracts pollinators to the orchid flowers. Visitations to orchids and movem
Autor:
L. L. Wolf, F. G. Stiles
Publikováno v:
The American Naturalist. 108:341-354
Photoperiod is apparently the most significant environmental factor controlling the annual cycles of most terrestrial temperate-zone organisms. For a number of species, there is evidence that this photoperiodic response entrains an apparently endogen
Publikováno v:
Science. 144:183-185
With a new modification of the release and recapture technique in which day-flying male moths are artificially painted, released, and then lured by their females into traps, it has been possible to obtain differential recapture frequencies in natural
Autor:
F. G. Stiles, S. M. Smith
Publikováno v:
The Condor. 79:91
The land birds of Costa Rica are the bestknown of Central America, thanks to the efforts of Slud (1964) and several later authors. However, over the years the waterbirds have been relatively neglected. Save for the accounts of selected species by Ori
Autor:
D. J. Levey, F. G. Stiles
Publikováno v:
The Condor. 90:607
Autor:
F. G. Stiles
Publikováno v:
The Condor. 86:118
Notes sur la repartition de cette espece, l'habitat, la biologie de la reproduction, les vocalisations, la taxonomie