62 



Binis — Our Lning Resources 



Table. Seasonal occuiTeiice and status and trends of populations of shorebirds in Nonh Aiiieiica west and east of the Continental Divide. 



Species 



Occurrence 



Breeding 



Wintering 



Size 



Population 



Trend 



Black-bellied plover (Pluvialis squalarola) 

 Pacific golden-plover (P fulva) 

 American golden-plover (Pdommica) 

 Snowy plover {Charadnus alexandrmus) 



Both regions Both regions 



Western Western 



Both regions Absent 



Both regions Both regions 



Wilson's plover (C wilsonia) 

 Common ringed plover (C hialicula) 

 Semipalmated plover (C semipalmalus) 

 Piping plover (C melodus) 

 Killdeer (C vociferus) 



Mountain plover (C. montanus) 



Both regions 

 Eastern 

 Both regions 

 Eastern 

 Both regions 



Both regions 

 Absent 

 Both regions 

 Mostly eastern 

 Both regions 



Unknown 

 Unknovnn 

 Unknown 

 18.500 b 



Unknown 

 Unknown 

 Unknown 

 4.700 b 

 Unknown 



Both regions Mostly western 5,000-15.000 b 



American oystercalcher(Haematopospatetos) Both regions Both regions Unknown 



Black oystercatcher {H. bachmani] Western Western 7,600 b 



Black-necked stilt {Himanlopus mexicanus) Both regions Both regions 25,000 w 



American avocel (flecurwros/ra amer/cana) Both regions Both regions 100,000-i-w 



Greater yellowlegs ( Tringa melanoleuca) 

 Lesser yellowlegs ( T. flavipes) 

 Solitary sandpiper ( T solilana) 

 Willet {Caloptrophorus semipalmalus) 



Wandering tattler (Heleroscelus incanus) 

 Spotted sandpiper {Aclitis macularia) 



Upland sandpiper (Barlramia longicauda) 



Eskimo curlew {Numenius borealis) 

 Whimbtel (A/ phaeopus) 

 Bristle-thighed curlew (W. tahillensis) 

 Long-billed curlew (N amencanus) 



Hudsonian godwit (Limosa haemaslica) 

 Bat-tailed godwit (i lapponica) 

 Marbled godwit {L ledoa) 



Both regions 

 Both regions 

 Both regions 

 Both regions 



Ruddy turnstone {Arenaria inlerpres) Both regions 



Black turnstone {A. melanocephala) Western 



Surlbird (Aphnza virgala) Western 



Red knot {Calidris canulus) Both regions 



Sanderling (C alba) Both regions 



Semipalmated sandpiper ( C. pusilla) Both regions 



Western sandpiper (C maun) Western 



Least sandpiper (C. minutilla) Both regions 



White-rumped sandpiper (C luscicdllis) Both regions 



Baird's sandpiper (C, balrdii) Both regions 



Pectoral sandpiper (C melanolos) Both regions 



Purple sandpiper (C. marilima) Eastern 



Rock sandpiper (C plilocnemis) Western 



Dunlin (C. alpina) Both regions 



Stilt sandpiper (C himanlopus) Both regions 

 Buff-breasted sandpiper {Tryngiles subrulicollis) Both regions 

 Short-billed dowitcher (Limnodromus gnseus) Both regions 



Long-billed dowitcher {L. scolopaceus) Both regions 



Common snipe {Gallinago gallinago) Both regions 



American woodcock (Scolopax minoi) Eastern 



Wilson's phalarope [Phalaropus Iricoloi) Both regions 



Red-necked phalarope (P lobalus) 

 Red phalarope {P lulicaria) 



Both regions 

 Both regions 



Both regions 

 Both regions 

 Both regions 

 Both regions 



Unknown 

 Unknown 

 Unknown 

 Unknown 



Both regions Absent 

 Western Absent 



Both regions Both regions 



Both regions 

 Western 

 Western 

 Both regions 

 Both regions 

 Absent 

 Both regions 

 Both regions 

 Absent 

 Absent 

 Absent 

 Eastern 

 Western 

 Both regions 

 Both regions 

 Absent 

 Both regions 

 Both regions 

 Both regions 



Eastern 



Both regions 



Absent 

 Western 



Unknown 

 25.000-40.000 b 

 100.000-1- w 



Unknown 



61,000-99,000 b 



50,000-70,000 s 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 



450,000-600,000 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 



Unknown 

 1,500,0001 



Unknown 

 Unknown 



Unknown 

 Unknown 

 Unknown 



Population decline and range contraction past century; significant decline in western region past 

 25 yr (Page et al, 1991; Page and Gill 1994) 

 Unknown 

 Unknown 

 Unknown 



Declining (Haig 1992) 



Decline of 2 0°o per yr in western region past 25 yr, 5 3°o decline per yr last 10 yr (J Sauer and S. 

 Droege, NBS, unpublished data) 



Population decline and range contraction past century; continental decline 3.6% per yr 

 past 25 yr (Knopf 1 994; FL Knopf, USI^S, unpublished report) 

 Unknown 



Unknown (Page and Gill 1994) 



Population decline and range contraction past century, no significant change in population 

 size past 25 yr (Page and Gill 1994. J Sauer and S Droege, NBS, unpublished data) 

 Population decline past century; decline of 3.6% per yr in western region past 10 yr 

 (Page and Gill 1994; G Page, unpublished data; J, Sauer and S. Droege. NBS. unpublished data) 

 Unknown 

 Unknown 

 Unknown 



Population decline and range contraction past century; population increase of 2.8% per 

 yr in United States past 25 yr; 0.5% increase in West in past 10 yr (Page and Gill 1994; 

 J. Sauer and S. Droege. NBS, unpublished data) 

 Unknown 

 Population 

 NBS, unpu 

 Population 

 basis past 

 S Droege, 

 Almost exti 

 Unknown 

 Unknown ( 

 Population 

 continental 

 Unknown 



Unknown (Page and Gill 1994; R Gill, unpublished data) 



Population decline and range contraction over past century; no significant trend throughout 

 continent or western region past 25 yr (Page and Gill 1994; G, Page, unpublished data; 

 J, Sauer and S. Droege. NBS, unpublished data) 

 Unknown 



Unknown (Handel and Gill 1992a) 

 Unknown (Page and Gill 1994) 

 Unknown 

 Unknown 

 Unknown 

 Unknown 

 Unknown 

 Unknown 

 Unknown 

 Unknown 

 Unknown 

 Unknown 

 wUnknown (Page and Gill 1994) 

 Unknown 

 Unknown 

 Unknown 

 Unknown 



Population stable past 25 yr but 3.9% decline per yr on continental basis during past 10 yr; decline 

 in western region not significant past 10 yr (J. Sauer and S Droege, NBS.unpublished data) 

 Unknown 



Population decline past century; expansion of range past 50 yr; annual population declines 

 of 7 5% throughout United States and 8 1% in central region dunng past 10 yr (Jehl 1988; 

 Page and Gill 1994, J Sauer and S. Droege. NBS. unpublished data) 

 Unknown 

 Unknown 



Population estimates lor Western North America unless othenvise stated (see Fig, 1 

 ual birds for b — breeding season, f — fall, w — winter, and s — spring. Geographic 



) Sources for estimates of population size given with trend information. Population size - 

 regions under population trend are defined in Robbins et al. (1986). 



estimated number of individ- 



