TY - JOUR
T1 - Northward migration of Red Knots Calidris canutus rufa and environment connectivity of southern Brazil to Canada
AU - De Brum, Antônio Coimbra
AU - Finger, Júlia Victória Grohmann
AU - Lathrop, Richard G.
AU - Feigin, Stephanie
AU - Smith, Joseph
AU - Niles, Lawrence Joseph
AU - Petry, Maria Virginia
N1 - Publisher Copyright: © The Author(s), 2024. Published by Cambridge University Press on behalf of BirdLife International.
PY - 2024/1/16
Y1 - 2024/1/16
N2 - During their northward migration, Red Knots Calidris canutus rufa stop at the Lagoa do Peixe National Park in the extreme south of Brazil to build up fat reserves for their journey to their Canadian breeding grounds. We tracked five Red Knots with PinPoint Argos-75 GPS transmitters to investigate differences in migration strategies from this stopover. Tracked birds used two different routes: the Central Brazil route and the Brazilian Atlantic Coast route. One bird flew 8,300 km straight from Lagoa do Peixe to the Delaware Bay (USA). Another bird stopped in Maranhão (north-east Brazil) and a third one used a yet unknown environment for the species, the mouth of the Amazon River at Baía Santa Rosa, Brazil. These two birds made short flights, covering stretches of 1,600 km to 3,600 km between stop-overs, where they stayed from 4 to 18 days. Our study highlights the occurrence of intrapopulation variation in migratory strategies and reveals the connectivity of environments that are essential for the viability of rufa Red Knot populations.
AB - During their northward migration, Red Knots Calidris canutus rufa stop at the Lagoa do Peixe National Park in the extreme south of Brazil to build up fat reserves for their journey to their Canadian breeding grounds. We tracked five Red Knots with PinPoint Argos-75 GPS transmitters to investigate differences in migration strategies from this stopover. Tracked birds used two different routes: the Central Brazil route and the Brazilian Atlantic Coast route. One bird flew 8,300 km straight from Lagoa do Peixe to the Delaware Bay (USA). Another bird stopped in Maranhão (north-east Brazil) and a third one used a yet unknown environment for the species, the mouth of the Amazon River at Baía Santa Rosa, Brazil. These two birds made short flights, covering stretches of 1,600 km to 3,600 km between stop-overs, where they stayed from 4 to 18 days. Our study highlights the occurrence of intrapopulation variation in migratory strategies and reveals the connectivity of environments that are essential for the viability of rufa Red Knot populations.
KW - Monitoring
KW - Nearctic
KW - Route
KW - Shorebirds
KW - Tracking
UR - http://www.scopus.com/inward/record.url?scp=85183527866&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85183527866&partnerID=8YFLogxK
U2 - 10.1017/S0959270923000308
DO - 10.1017/S0959270923000308
M3 - Article
SN - 0959-2709
VL - 34
JO - Bird Conservation International
JF - Bird Conservation International
ER -