Breeding

Breeding Schedule

Both sexes arrive on breeding grounds in late May and early June, with males setting up territories (usually in aggregates), and females then arriving, choosing which male(s) to breed with (82 Flint, V. E. and P. S. Tomkovich. (1982). "Ecological and ethological isolation in the Pectoral Sandpiper and the Sharp-tailed Sandpiper." In Ornithological Studies in the USSR, 241-261. Moscow: Nauka. Close , 59 Myers, J.P., Hildén O. and Tomkovich, P. (1982). Exotic Calidris species of the Siberian tundra. Ornis Fennica. 59: 175–182. Close ). Egg-laying takes place during the first half of June (59 Myers, J.P., Hildén O. and Tomkovich, P. (1982). Exotic Calidris species of the Siberian tundra. Ornis Fennica. 59: 175–182. Close ), with males departing during incubation period.

First/Later Broods

No information available.

Site Characteristics

Nests are placed in dense sedges, thought to be the wettest nest site of any Calidridine (40 Myers, J. P., O. Hilden and P. Tomkovich. (1982). Exotic Calidris species of the Siberian tundra. Ornis Fennica 59:175-182. Close ).

Structure and Composition

Nest is well hidden, shallow depression filled with grass and willow leaves.

Four eggs, sometimes three, are laid during the first half of June (1 Kozlowa, E. V. (1966). Discovery of the nesting of the Sharp-tailed Sandpiper. Emu 66(3):252. Close , 59 Myers, J.P., Hildén O. and Tomkovich, P. (1982). Exotic Calidris species of the Siberian tundra. Ornis Fennica. 59: 175–182. Close ). Their color varies from a nearly homogeneous olive-brown to olive brown with small dark brown spots to yellow-olive with conspicuous large dark brown spots (61 Flint, V.E. and Tomkovich, P.S. (1982). [Ecological and ethological isolation in the Pectoral Sandpiper and the Sharp-tailed Sandpiper]. Pp. 241–261 in: Gavrilov, V.M. & Potapov, R.L. eds. (1982). [Ornithological Studies of the USSR]. Vol. 2. Zoological Institute, USSR Academy of Sciences, Moscow. In Russian. Close ). They are very heavily at the large end, sized 35.6–39.5 mm × 26–27.8 mm (1 Kozlowa, E. V. (1966). Discovery of the nesting of the Sharp-tailed Sandpiper. Emu 66(3):252. Close ).

Parental Behavior

Incubation is performed solely by the female (59 Myers, J.P., Hildén O. and Tomkovich, P. (1982). Exotic Calidris species of the Siberian tundra. Ornis Fennica. 59: 175–182. Close ).

No information.

No information.

Provided entirely by the female.

Not known to occur.

No information.

No information.

No information.