... for correspondence (e-mail: [email protected] ) 6 9 2005 © The Company of Biologists Limited 2005 2005 uropygial gland preen wax camouflage olfaction nest predation sandpiper Calidris canutus The application of secretions of the uropygial gland, also called preen waxes...

... of trials with a shorebird, the red knot Calidris canutus , fed natural and artificial prey types under naturalistic but fully controlled indoor aviary conditions. During eight 1-day trials we successfully manipulated the extent to which the five red knots were (1) actively probing and walking (i.e...

...Jan A. van Gils; Theunis Piersma; Anne Dekinga; Maurine W. Dietz SUMMARY Aiming to interpret functionally the large variation in gizzard masses of red knots Calidris canutus , we experimentally studied how the digestive processing rate is influenced by the size of the gizzard. During their non...

...Susanne Jenni-Eiermann; Lukas Jenni; Anders Kvist; Åke Lindström; Theunis Piersma; G. Henk Visser SUMMARY This study examines fuel use and metabolism in a group of long-distance migrating birds, red knots Calidris canutus (Scolopacidae), flying under controlled conditions in a wind tunnel for up...

...Anne Dekinga; Maurine W. Dietz; Anita Koolhaas; Theunis Piersma SUMMARY The ability to change organ size reversibly can be advantageous to birds that perform long migrations. During winter, red knots ( Calidris canutus ) feed on shellfish and carry a muscular gizzard that weighs 10% of their body...

...Åke Lindström; Anders Kvist; Theunis Piersma; Anne Dekinga; Maurine W. Dietz ABSTRACT We used ultrasonic imaging to monitor short-term changes in the pectoral muscle size of captive red knots Calidris canutus . Pectoral muscle thickness changed rapidly and consistently in parallel with body mass...

...Maurine W. Dietz; Theunis Piersma; Anne Dekinga ABSTRACT Shorebirds such as red knots Calidris canutus routinely make migratory flights of 3000 km or more. Previous studies on this species, based on compositional analyses, suggest extensive pectoral muscle hypertrophy in addition to fat storage...