Reference health
Highly mobile insectivorous swifts perform multiple intra‐tropical migrations to exploit an asynchronous African phenology
48/48 checkable references clean · checked 2026-07-15
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a publisher retraction, withdrawal, or removal notice.
17 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 48 checked references that resolve
resolves10.1371/journal.pone.0041195
Migration Routes and Strategies in a Highly Aerial Migrant, the Common Swift Apus apus, Revealed by Light-Level Geolocators
resolves10.1098/rstb.2015.0393
Negotiating an ecological barrier: crossing the Sahara in relation to winds by common swifts
resolves10.1098/rstb.2016.0252
Timing avian long-distance migration: from internal clock mechanisms to global flights
resolves10.1890/15-0554.1
Resource waves: phenological diversity enhances foraging opportunities for mobile consumers
resolves10.1086/667590
A Migratory Northern Ungulate in the Pursuit of Spring: Jumping or Surfing the Green Wave?
resolves10.13157/arla.62.1.2015.35
Moult and Morphometrics of the Pallid Swift<i>Apus pallidus</i>in Northwestern Italy
resolves10.1016/j.rse.2004.03.014
A simple method for reconstructing a high-quality NDVI time-series data set based on the Savitzky–Golay filter
resolves10.1111/j.2041-210X.2011.00136.x
Tracking migratory songbirds: accuracy of light‐level loggers (geolocators) in forest habitats
resolves10.1007/BF00606125
The seasonal development of photoperiodic responsiveness in an equatorial migrant, the garden warblerSylvia borin
resolves10.1111/j.1600-0706.2008.17309.x
The natural link between Europe and Africa – 2.1 billion birds on migration
resolves10.1111/j.1474-919X.1993.tb02829.x
Migration, stopover and moult of the Great Reed Warbler <i>Acrocephalus arundinaceus</i> in Ghana, West Africa
resolves10.1111/jav.01972
Flight activity in pallid swifts
<i>Apus pallidus</i>
during the non‐breeding period
resolves10.1016/S0034-4257(02)00096-2
Overview of the radiometric and biophysical performance of the MODIS vegetation indices
resolves10.2307/4569
The Movements of Palaearctic Landbird Migrants in Tsavo East National Park, Kenya
resolves10.1111/j.1365-2028.1986.tb00341.x
Diurnal and seasonal variation in biomass of arthropods in Tsavo East National Park, Kenya
resolves10.1111/jav.00829
The migration of the great snipe
<i>Gallinago media</i>
: intriguing variations on a grand theme
resolves10.1111/j.2041-210X.2012.00248.x
<scp>G</scp>eo<scp>L</scp>ight – processing and analysing light‐based geolocator data in <scp>R</scp>
resolves10.1111/j.2041-210X.2012.00185.x
Geolocation by light: accuracy and precision affected by environmental factors
resolves10.1155/2013/453521
The West African Sahel: A Review of Recent Studies on the Rainfall Regime and Its Interannual Variability
resolves10.1111/jav.01071
Migration strategies and annual space‐use in an Afro‐Palaearctic aerial insectivore – the European nightjar
<i>Caprimulgus europaeus</i>
resolves10.1111/j.1474-919X.2005.00460.x
Garden Warbler <i>Sylvia borin</i> migration in sub‐Saharan West Africa: phenology and body mass changes
resolves10.1111/j.1474-919X.1976.tb02012.x
THE SOUTHWARD MIGRATION OF PALAEARCTIC BIRDS OVER NGULIA, KENYA
resolves10.1080/00063657.2017.1359235
So similar and yet so different: taxonomic status of Pallid Swift<i>Apus pallidus</i>and Common Swift<i>Apus apus</i>
resolves10.1016/j.tree.2005.05.011
Using the satellite-derived NDVI to assess ecological responses to environmental change
resolves10.1007/s10336-017-1447-6
Energy saving of aerial roosting Swifts by dynamic flap-gliding flight
resolves10.1046/j.0019-1019.2001.00007.x
Different wintering strategies of two Palearctic migrants in West Africa – a consequence of foraging strategies?
resolves10.1111/1365-2656.12583
How individual Montagu's Harriers cope with Moreau's Paradox during the Sahelian winter
resolves10.1111/j.1474-919X.1978.tb06813.x
FACTORS AFFECTING THE FOOD SUPPLY AND BREEDING SEASON OF RESIDENT BIRDS AND MOVEMENTS OF PALAEARCTIC MIGRANTS IN A TROPICAL AFRICAN SAVANNAH
resolves10.1086/687531
Ecological Causes and Consequences of Intratropical Migration in Temperate-Breeding Migratory Birds
resolves10.1007/BF00324429
Social dominance and migratory restlessness in the dark-eyed junco (Junco hyemalis)
resolves10.1126/sciadv.1601360
Resource tracking within and across continents in long-distance bird migrants
resolves10.1111/j.1365-2656.2012.02036.x
A<scp>P</scp>alaearctic migratory raptor species tracks shifting prey availability within its wintering range in the<scp>S</scp>ahel
resolves10.1111/j.1600-0587.2008.05626.x
The attraction of the known: the importance of spatial familiarity in habitat selection in wapiti
<i>Cervus elaphus</i>
resolves10.1111/j.1467-9868.2010.00749.x
Fast Stable Restricted Maximum Likelihood and Marginal Likelihood Estimation of Semiparametric Generalized Linear Models
resolves10.2151/jmsj.2016-003
Start and End Dates of Rainy Season and their Temporal Change in Recent Decades over East Asia
The 17 references without a DOI — listed, not checked
no DOI — not checkedConfronting the winds: orientation and flight behaviour of roosting swifts, Apus apus
no DOI — not checkedIl Rondone pallido Apus pallidus, un'altra specie migratrice condizionata dal clima del Sahel
no DOI — not checkede_1_2_5_13_1
no DOI — not checkede_1_2_5_15_1
no DOI — not checkede_1_2_5_16_1
no DOI — not checkedSeasonal changes in insect abundance and biomass in an East African grassland with reference to breeding and migration in birds
no DOI — not checkedAn advance in geolocation by light
no DOI — not checkede_1_2_5_19_1
no DOI — not checkedCommunity dynamics of arboreal insectivorous birds in African savannas in relation to seasonal rainfall patterns and habitat change
no DOI — not checkede_1_2_5_33_1
no DOI — not checkedReadme document for the tropical rainfall measurement mission (TRMM) v7
no DOI — not checkedIntiProc – geolocation processing software 2015
no DOI — not checkede_1_2_5_39_1
no DOI — not checkedEffect of light‐level geolocators on apparent survival of two highly aerial swift species
no DOI — not checkede_1_2_5_43_1
no DOI — not checkede_1_2_5_45_1
no DOI — not checkede_1_2_5_66_1
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