Neophobia in the foraging-site selection of a neotropical migrant bird: An experimental study
AUTOR(ES)
Greenberg, Russell
RESUMO
I hand-raised chestnut-sided warblers (Dendroica pensylvanica) in a room with eight experimental microhabitats; the microhabitats were removed after 6 weeks. I then measured the response of the warblers to the eight “natal” and eight “novel” microhabitats in two experiments conducted 2 and 4 months after removal. Chestnut-sided warblers responded with decreased feeding latency (neophobia) and a greater preference for foraging at the natal microhabitats. I suggest that an ontogenetic increase in neophobia restricts chestnut-sided warblers to foraging at microhabitats most similar to those experienced as juveniles.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=345303Documentos Relacionados
- Causes and consequences of song amplitude adjustment in a territorial bird: a case study in nightingales
- Long-term trend toward earlier breeding in an American bird: A response to global warming?
- A brand-new bird: how two amateur scientists created the first genetically engineered animal
- The higher the better: sentinel height influences foraging success in a social bird
- Migratory double breeding in Neotropical migrant birds