Effect of fuel deposition rate on departure fuel load of migratory songbirds during spring stopover along the northern coast of the Gulf of Mexico

Moore, Frank R.; Covino, Kristen M.; Lewis, William B.; Zenzal, Theodore J.; Benson, Thomas J.

doi:10.1111/jav.01335

Cited by 16 publications

(18 citation statements)

References 52 publications

(84 reference statements)

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“…Evidence from refuelling rates at stopover sites suggests long-distance migratory songbirds are either time-minimizers or total-energy-minimizers 17 . For example, six species of Nearctic-Neotropical migrants 24 as well as four species of Afro-Palearctic migrants 25 – 27 showed positive correlations between fuel loads and fuel deposition rates acquired at stopover sites. Also, there are clear benefits of early arrival at both the breeding 14 , 28 , 29 and stationary non-breeding grounds 30 – 32 , suggesting that many songbirds are under a strong selection pressure to migrate quickly.…”

Section: Introductionmentioning

confidence: 98%

Fuel loads acquired at a stopover site influence the pace of intercontinental migration in a boreal songbird

Gómez

Bayly

Norris

et al. 2017

Sci Rep

103

111

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Long-distance migratory organisms are under strong selection to migrate quickly. Stopovers demand more time than flying and are used by individuals to refuel during migration, but the effect of fuel loads (fat) acquired at stopover sites on the subsequent pace of migration has not been quantified. We studied stopover behaviour of Grey-cheeked Thrush (Catharus minimus) at a site in northern Colombia and then tracked their migration using an intercontinental radio-telemetry array. Tracking confirmed long-distance flights of more than 3000 km, highlighting the key importance of a single stopover site to the migration strategy of this species. Our results suggest that these songbirds behave as time-minimizers as predicted by optimal migration theory, and that fuel loads acquired at this South American stopover site, together with departure date, carry-over to influence the pace of migration, contributing to differences in travel time of up to 30 days in birds subsequently detected in the U. S. and Canada. Such variation in the pace of migration arising from a single stopover site, likely has important fitness consequences and suggests that identifying important fuelling sites will be essential to effectively conserve migratory species.

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Section: Introductionmentioning

confidence: 98%

Fuel loads acquired at a stopover site influence the pace of intercontinental migration in a boreal songbird

Gómez

Bayly

Norris

et al. 2017

Sci Rep

103

111

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“…But the internal state of the individual (resting state, fuel store, migratory experience) also largely influences departure decision: birds need to rest and reach a sufficient level of fuel store to perform the next migratory flight (Alerstam 1990, Hedenström and Alerstam 1997, Schaub et al 2008, Goymann et al 2010, Schmaljohann et al 2012, Dossman et al 2016, Schmaljohann and Eikenaar 2017, Moore et al 2017, Anderson et al 2019). Apart from resting to recover from extreme physical exercise and sleeping to recover from sleep deprivation during migratory flight (Schwilch et al 2002), birds at stopover allocate most of their time and energy to foraging (Hedenström and Alerstam 1997, Cohen et al 2014, Smith and McWilliams 2014).…”

Section: Introductionmentioning

confidence: 99%

When to depart from a stopover site? Time since arrival matters more than current weather conditions

Roques

Henry

Guyot³

et al. 2020

Preprint

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On their journey to wintering or breeding sites, migratory birds usually alternate between migratory flights and stopovers where they rest and refuel. Actually, migrating birds spend most of the time at stopovers. Consequently, selection to minimize total time spent on migration likely operates mainly on the effectiveness of stopover rest and refueling. Departure probability from stopover sites depends both on weather conditions and fuel stores, but their respective role has not been quantified. In the present study, we assess the relative contribution of factors driving the departure decision from a stopover site. As we cannot reliably characterize body condition and restness when capture probability is low, we propose to use the Time Since Arrival (TSA) as a proxy of the changes through days of the internal state of stopovering birds. We developed a specific capture-recapture model to quantify the relative contribution of TSA and climatic conditions on a 20-year capture-recapture dataset of a long-distance migratory songbird (Sedge warbler). The effect of TSA has yet the major contribution to departure probability compared to weather conditions. Here, low humidity and an increase of atmospheric pressure in the days preceding departure are the weather conditions associated with a higher departure probability but remain secondary compared to the time the individual has already spent at the site. The probability to depart from a stopover site is therefore largely determined by the time that a bird has already spent at the site. Whether this Time Since Arrival is rather a proxy of resting, feeding or fattening efficiency remains to be explored.

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“…S. rufus breeds in the Pacific Northwest of the United States and Canada and, during winter, migrates from the southwestern United States through central Mexico ( Healy & Calder, 2006 ). Like other species of hummingbirds ( Kodric-Brown & Brown, 1978 ; McKinney et al, 2012 ; Nemeth & Moore, 2012 ; Graham et al, 2016 ; Zenzal & Moore, 2016 ) and songbirds ( Moore et al, 2017 ), S. rufus requires refueling stops in different places along its flyway ( Gass, 1979 ; Carpenter, Paton & Hixon, 1983 ; Carpenter et al, 1993 ; Calder, 2004 ). The arrival of S. rufus at stopover sites is correlated with the blooming of its feeding plants ( Calder, 1987 ; Kodric-Brown & Brown, 1978 ; Russell et al, 1994 ).…”

Section: Introductionmentioning

confidence: 99%

Hummingbird migration and flowering synchrony in the temperate forests of northwestern Mexico

López‐Segoviano

Arenas‐Navarro

Vega

et al. 2018

PeerJ

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BackgroundMany species of birds are morphologically and physiologically adapted for migration. Migratory movements of birds can range from thousands of kilometers, such as when birds migrate from wintering to breeding sites in summer, to several kilometers, such as when birds migrate among habitats in a single mountain system. The main factor that influences bird migration is the seasonal fluctuation of food resources; climate, predation, competition for resources and endogenous programming are also important factors. Hummingbirds are highly dependent on nectar, so their migration is likely correlated with the blooming of plant species. The ecological implications of altitudinal migration in the mountains of North America as well as the latitudinal migration of Selasphorus rufus through Mexico are still poorly understood. To explore these issues, over three non-consecutive years, we evaluated interannual variation in the phenologies of a latitudinal migrant (S. rufus) and an altitudinal migrant (Amazilia beryllina) and their visited plants.MethodsWe assessed the relationship between two migratory hummingbirds and flower abundance in 20 fixed-radius plots (25 m radius). All available flowers were counted along transects (40 × 5 m) inside each fixed-radius plot. Sampling was performed every 10 days from November 12 through February 20 of 2010–2011, 2013–2014 and 2015–2016, resulting in a total of 11 samples of each plot per period. Phenological variation and the relationships among hummingbird abundance, flower abundance and vegetation type were evaluated using a generalized additive mixed model.ResultsS. rufus abundance was related to sampling time in the first and third periods; this relationship was not significant in the second period. A. beryllina abundance was related with the sampling time over all three periods. The abundance of S. rufus hummingbirds was significantly related to the number of Salvia iodantha flowers. The abundance of A. beryllina hummingbirds was related to the number of S. iodantha and Cestrum thyrsoideum flowers and the total number of flowers. We found a non-significant correlation between S. rufus and A. beryllina abundance and vegetation types.ConclusionContrary to expectations, the long-distance migration of S. rufus was not consistent over the sampling periods. The migration of S. rufus through the study region may be altered by changes in climate, as has occurred with other species of migratory birds. In the present study, the migration of S. rufus was correlated with the blooming of S. iodantha. In comparison, the altitudinal migrant A. beryllina responded to the availability of floral resources but was not associated with a particular plant. The migration of this latter species in the area probably depends on multiple factors, including climatic and demographic factors, but is particularly dependent on the supply of floral resources and competition for these resources.

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Effect of fuel deposition rate on departure fuel load of migratory songbirds during spring stopover along the northern coast of the Gulf of Mexico

Cited by 16 publications

References 52 publications

Fuel loads acquired at a stopover site influence the pace of intercontinental migration in a boreal songbird

Fuel loads acquired at a stopover site influence the pace of intercontinental migration in a boreal songbird

When to depart from a stopover site? Time since arrival matters more than current weather conditions

Hummingbird migration and flowering synchrony in the temperate forests of northwestern Mexico

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