Daylength and the hummingbird's use of time
Abstract
PHYSIOLOGIcAL homeostasis is maintained with energy that a bird must extract from its environment. Effective investment of the bird's time in exchange for the necessary energy must be the objective of maintenance strategy. If the rate of intake is less than the metabolic rate over a period of time, homeostasis is impossible. The temporal aspects involved in attainment of energy balance by a diurnal bird include duration of adequate light for effective foraging, cyclic availability of food, flight time to a food source or successful prey capture, duration of the nocturnal fast, and the daily environmental temperature cycle that will influence the overall energy cost. In summer the length of daylight for foraging increases with latitude, and the duration of the nocturnal fast decreases. In winter, the ratio of feeding time to fasting time is reduced with increasing latitude. The endurance of fasting would be directly proportional to the amount of energy in reserve and inversely related to the rate of degradation of the reserves:
Local Knowledge Graph (6 entities)
Related Works
Items connected by shared entities, co-authorship, citations, or semantic similarity.
Microhabitat selection during nesting of hummingbirds in the Rocky Mountains
When do hummingbirds use torpor in nature?
The hummingbird's restraint: a natural model for weight control
Data from: Atypical flowers can be as profitable as typical hummingbird flowers
Data from: Effects of increased flight on the energetics and life history of the butterfly Speyeria mormonia
Appendix C. Relationships between temperature and arrival of Broad-tailed Hummingbirds and flowering onset in its early-season nectar resources at the Rocky Mountain Biological Laboratory in Colorado, USA.
Colorado Ranch Management School (Part 6)
Determination of Beaver Food Consumption
A New Hydrologic Perspective of How Beaver Ponds Function
Cited By (18 times, 5 in Knowledge Hub)
Effects of Daily Temperature Changes on Broad-Tailed Hummingbird Foraging Patterns
The effect of floral abundance on feeder censuses of hummingbird populations
Site-fidelity, longevity, and population dynamics of broadtailed hummingbirds: a ten-year study
On the temperature-dependency of optimal nectar concentrations for birds
Energetics of small body size and high latitude: the rufous humming bird in Coastal Alaska
References (25)
1 in Knowledge Hub, 24 external