Stopover biology of Ruby-throated Hummingbirds (<i>Archilochus colubris</i>) during autumn migration

Zenzal, Theodore J.; Moore, Frank R.

doi:10.1642/auk-15-160.1

Cited by 29 publications

(28 citation statements)

References 68 publications

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“…We estimated the FDRs (g d –1 ) of migrants stopping over at our study site using methods detailed by Cherry () that is, the rate of mass change was standardized by computing the percent change/hour (Moore and Kerlinger , Loria and Moore , Morris et al , Németh and Moore , Zenzal and Moore ). We did this by subtracting the final capture mass from the initial capture mass for birds recaptured the same day of initial capture, and then dividing by the number of hours between captures (Table ).…”

Section: Methodsmentioning

confidence: 99%

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

Covino

Lewis

et al. 2017

Journal of Avian Biology

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Migrants are generally assumed to minimize their overall migration time by adjusting their departure fuel loads (DFL) in relation to anticipated and experienced fuel deposition rates (FDRs). We utilized a 21‐yr long migration banding station dataset to examine the relationship between FDR and DFL during spring migration in six Nearctic‐Neotropical migratory songbird species during stopover along the northern coast of the Gulf of Mexico (GOM) following trans‐gulf flight. Estimates of fuel stores, stopover durations, and FDRs from our long term migration data set were combined to determine DFL. We expected and found that migrants across all six species adjust their DFL to the rate at which they deposit fuel reserves. This robust finding suggests that songbird migrants are sensitive to time constraints during spring passage presumably to fine‐tune their stopover schedule in relation to experienced and anticipated habitat quality. Two of the species studied showed an effect of age on the FDR–DFL relationship: one was consistent with the expectation that older birds would be less sensitive to changes in FDR, while the second was contrary to our expectations and likely suggesting an age‐dependent response to habitat quality. We found sex‐dependent differences consistent with male DFL being more sensitive to FDR in only two of six species studied, and argue that both males and females are time constrained during spring passage in relation to arrival at breeding destinations. The positive relationship between FDR and DFL among all species and for age and sex groups in some species reflects a migration strategy sensitive to time.

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Section: Methodsmentioning

confidence: 99%

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

Covino

Lewis

et al. 2017

Journal of Avian Biology

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“…• Monitoring health and behavior in captive animal populations (Whitham and Miller, 2016). • Quantifying stopover duration and behavior in migrating species (Zenzal and Moore, 2016). • Automated Collection of body-mass and other morphometric data (Hou et al, 2015;Small, unpublished).…”

Section: Discussionmentioning

confidence: 99%

“…RFID is widely used as a marking method wherein tagged animals are captured and scanned manually in a manner similar to the "microchips" used in veterinary care of pets and livestock (Thorstad et al, 2013;Anu and Canessane, 2017). However, RFID can also be effectively employed in automated, remote sensing systems, with stationary readers that record specific animal activities, such as accessing a food source or nest (e.g., Zuckerberg et al, 2009;Bonter and Bridge, 2011;Catarinucci et al, 2014b;Ibarra et al, 2015;Zenzal and Moore, 2016). More advanced systems have implemented cognitive tests in lab and field settings with experimental routines customized for individual animals (Croston et al, 2016;Morand-Ferron et al, 2016) Although RFID systems are relatively inexpensive compared to other forms of biologging, cost can still be a barrier to the use of RFID in research, especially if large numbers of reading units are required.…”

Section: Introductionmentioning

confidence: 99%

An Arduino-Based RFID Platform for Animal Research

et al. 2019

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Radio Frequency Identification (RFID) technology has been broadly applied in the biological sciences to yield new insights into behavior, cognition, population biology, and distributions. RFID systems entail wireless communication between small tags that, when stimulated by an appropriate radio frequency transmission, emit a weak, short-range wireless signal that conveys a unique ID number. These tags, which often operate without a battery, can be attached to animals such that their presence at a particular location can be detected by an RFID reader. This paper describes an RFID data-logging system that can serve as the core for a wide variety of field and laboratory applications for monitoring the activities of individual animals. The core electronics are modeled on an Arduino circuit board, which is a hobbyist electronics system. Users can customize the hardware and software to accommodate their needs. We demonstrate the utility of the system with cursory descriptions of three real-world research applications. The first is a large-scale deployment that was used to examine individual breeding behaviors across four local populations of Wood Ducks. The second application employed an array of RFID-enabled bird feeders that allowed for tests of spatial cognition. Third, we describe a nest-box monitoring system that both records visits from breeding birds and administers experimental treatments, such as increasing temperature or playing audio recordings, in accordance to the presence/absence of individual birds. With these examples we do not attempt to relate details with regard to research findings; rather our intent is to demonstrate some of the possibilities enabled by our low-cost RFID system. Detailed descriptions, design files, and code are made available by means of the Open Science Framework.

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“…The importance of the moult in the life cycle of birds of prey for advancing our understanding of the ecology of each species has been recently highlighted by Zuberogoitia et al (2018). In several migrating species moulting leads to age-dependent migration strategies (Cristol et al 1999;Zenzal and Moore 2016) and these differences are especially pronounced among long-distance migrants. Among passerines, first-year birds migrate earlier than adults.…”

Section: Introductionmentioning

confidence: 99%

Flight feather moult in Western Marsh Harriers during autumn migration

Ramírez¹,

Panuccio

2019

Avian Res

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Background: Most of long-distance migratory raptors suspend moult during migration but detailed information is patchy for most of the Palearctic species. The aim of this research is to verify if active moulting in migrating Western Marsh Harriers occurs and to quantify the extent of moulting along the season focusing on primary feathers. Methods: During a whole post-breeding migration at the Strait of Messina in Southern Italy, we gathered information about symmetrical flight feather moult from 221 adults by taking pictures of raptors passing at close range. Results: We found active moulting primaries during autumn migration in 48.4% of our samples. Slight differences on the extension and timing among sex classes were recorded during the season, with adult females showing a more advanced moult stage than adult males. Conclusion: The finding that the extension of the suspended moult was already defined in migratory individuals might be explained as an adaptation to minimize the energy required for moulting during migration.

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Stopover biology of Ruby-throated Hummingbirds (Archilochus colubris) during autumn migration

Cited by 29 publications

References 68 publications

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

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

An Arduino-Based RFID Platform for Animal Research

Flight feather moult in Western Marsh Harriers during autumn migration

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