Southern fulmars molt their primary feathers while incubating
Article Abstract:
The association between molting and breeding in the southern fulmar, Fulmarus glacialoides, is investigated and correlated with other factors relating to age, breeding status and sex of the individual. Results show that primary molt coincides with incubation among breeding individuals. Molting score is greater among nonbreeders but is not significantly different between males and females. The timing of molting is correlated with food availability and resource reallocation during incubation.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1998
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Annual molt in ruby-throated and black-chinned hummingbirds
Article Abstract:
A study on avian biology discussed the details of the yearly molt in ruby-throat and black-chinned hummingbirds. A newly hatched Archilocus colubris or Archilochus alexandri is basically featherless before reaching three weeks of age. The feathers are fully replaced within a year's time after the hummingbirds migrate for the winter. Results show that both hummingbird species share several similarities, with differences merely being due to the birds' migrant or resident status.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1995
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Torpor in three species of Brazilian Hummingbirds under semi-natural conditions
Article Abstract:
The use of torpor by three species of Brazilian hummingbirds were examined and kept under semi natural conditions. Subjecting them to food deprivation revealed the energetic status of hummingbirds. Under prevailing ambient temperatures, a nonregulated torpor occurred in the three hummingbird species indicating a large interspecific differences in the use of torpor. Moreover, hummingbirds use torpor even if they are not stressed.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1997
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