Search Constraints

Start Over
Filtering by: Subject Birds -- Behavior Remove constraint Subject: Birds -- Behavior Language English [eng] Remove constraint Language: English [eng]

Search Results

  • Polygyny in the bobolink : habitat quality and the adaptive complex

    Creator:
    Martin, Stephen George, 1941-
    Abstract:
    The adaptiveness of polygyny in passerines poses a particularly intriguing problem. The altricial young of this group require extended parental care, but young of polygynous pairings generally lack the undivided attention of the male which young of monogamous pairings receive. Polygynous offspring may thus be undernourished and experience greater mortality....
    Resource Type:
    Dissertation
    Full Text:
    examined those adaptive modifications of breeding biology and parental behavior which served to minimize

  • Life history and environmental influences on avian incubation and parental care in songbirds

    Creator:
    Austin-Bythell, Suzanne H.
    Abstract:
    Patterns of nest attendance behavior by breeding birds represent a parent-offspring trade-off in which adults balance self-maintenance with parental care decisions. Incubation, in particular, is of interest because adults must provide an environment suitable for embryonic development through nest-building and contact-incubation. We evaluated how adult incubation constancy and nest visitation...
    Resource Type:
    Dissertation
    Full Text:
    : __________________________________________________________________ William Douglas Robinson Patterns of nest attendance behavior by breeding birds

  • Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

    Creator:
    Frey, Sarah J. K.
    Abstract:
    Population trends and patterns in species distributions are the major currencies used to examine responses by biodiversity to changing environments. Effective conservation recommendations require that models of both distribution dynamics and population trends accurately reflect reality. However, identification of the appropriate temporal and spatial scales of animal response, and then...
    Resource Type:
    Dissertation
    Full Text:
    (‘microclimate’), B) the influence of microclimate on local-scale occupancy dynamics of bird communities, and C

  • Spatial and Temporal Dynamics of Broad-scale Predictive Models : Influences of Scale

    Creator:
    Hooper, Samuel
    Abstract:
    Developing accurate predictive distribution models requires adequately representing relevant spatial and temporal scales, as these scales are ultimately reflective of the relationships between distributions and influential environmental conditions. In this research, we considered both spatial and temporal scale and the influence each has on predicting broad-scale distributions of two disparate...
    Resource Type:
    Masters Thesis
    Full Text:
    two disparate but related phenomena: land cover and bird distributions. Employing machine- learning