Contrasting use of space by two migratory Afro-Palearctic warblers on their African non-breeding grounds
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Contrasting use of space by two migratory Afro-Palearctic warblers on their African non-breeding grounds. / Mostafa, Dina Abdelhafez Ali; Willemoes, Mikkel; Salewski, Volker; Ortvad, Troels Eske; Dabelsteen, Torben; Thorup, Kasper.
In: Journal of Ornithology, Vol. 162, No. 3, 2021, p. 813-821.Research output: Contribution to journal › Journal article › Research › peer-review
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T1 - Contrasting use of space by two migratory Afro-Palearctic warblers on their African non-breeding grounds
AU - Mostafa, Dina Abdelhafez Ali
AU - Willemoes, Mikkel
AU - Salewski, Volker
AU - Ortvad, Troels Eske
AU - Dabelsteen, Torben
AU - Thorup, Kasper
PY - 2021
Y1 - 2021
N2 - In migratory birds, constraints due to breeding are relaxed during the non-breeding season and thus, social behaviours and spatial associations are potentially more directly coupled to food resources and habitats. Use of space and territorial behaviour has rarely been studied in Afro-Palearctic migrants. Variation in strategies could exist among species within the same habitat because of differences in foraging, diet and microhabitat. We compare use of space and association with conspecifics in Common Chiffchaffs Phylloscopus collybita and Subalpine Warblers Sylvia cantillans at a non-breeding site in northern Senegal using radio telemetry and playback experiments. Home ranges of Chiffchaffs were larger and overlapped more than those of Subalpine Warblers. Though Chiffchaffs were often close together, we found no signs of spatial association among individuals in either species. Chiffchaffs showed no clear pattern of territorial response to conspecific song; whereas, playback elicited a territorial response in most Subalpine Warblers. Our results suggest species-specific differences in use of space that might reflect differences in foraging ecology and microhabitat.
AB - In migratory birds, constraints due to breeding are relaxed during the non-breeding season and thus, social behaviours and spatial associations are potentially more directly coupled to food resources and habitats. Use of space and territorial behaviour has rarely been studied in Afro-Palearctic migrants. Variation in strategies could exist among species within the same habitat because of differences in foraging, diet and microhabitat. We compare use of space and association with conspecifics in Common Chiffchaffs Phylloscopus collybita and Subalpine Warblers Sylvia cantillans at a non-breeding site in northern Senegal using radio telemetry and playback experiments. Home ranges of Chiffchaffs were larger and overlapped more than those of Subalpine Warblers. Though Chiffchaffs were often close together, we found no signs of spatial association among individuals in either species. Chiffchaffs showed no clear pattern of territorial response to conspecific song; whereas, playback elicited a territorial response in most Subalpine Warblers. Our results suggest species-specific differences in use of space that might reflect differences in foraging ecology and microhabitat.
KW - Phylloscopus
KW - Sylvia
KW - Home range
KW - Territoriality
KW - Spatial association
KW - Song
KW - Radio tracking
KW - Playback response
U2 - 10.1007/s10336-021-01881-1
DO - 10.1007/s10336-021-01881-1
M3 - Journal article
VL - 162
SP - 813
EP - 821
JO - Journal fur Ornithologie
JF - Journal fur Ornithologie
SN - 0021-8375
IS - 3
ER -
ID: 272322078