Genus Stellula (organism)
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Models of character evolution often assume a single mode of evolutionary change, such as continuous, or discrete. Here I provide… Expand SummarySelasphorus flammula (2.4–3.0 g) breeds in the high mountain regions of Costa Rica (up to 3200 m). Its small size together… Expand I developed two versions of the twin threshold model (TTM) to assess risk-sensitive foraging decisions by rufous hummingbirds… Expand other birds, this section including also a contribution on the anatomy of Hummingbirds by Mr. Frederic A. Lucas (pp. 29o-294 , pl… Expand Abstract From 1980 to 2000, we mist-netted 2412 Allen's Hummingbirds (Selasphorus sasin) and 203 Rufous Hummingbirds (S. rufus… Expand