North American Birds

VOLUME 70 NO3-NO4 2019

A Quarterly Journal of Ornithological Record Published by the American Birding Association. The mission of the journal is to provide a complete overview of the changing panorama of our continent’s birdlife.

Issue link: http://nab.aba.org/i/1115839

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N O R T H A M E R I C A N B I R D S 314 I O WA & M I S S O U R I Saylorville included a record early Ruff (ph. SJD) and 4 Hudsonian Godwits (SJD). Big flocks of southbound shorebirds were 650 Least Sandpipers and 400 Pectoral Sand - pipers at Hawkeye 21 Jul (BC), and 2,000 Pectoral Sandpipers and 1,200 Lesser Yel - lowlegs in Worth, IA 30 Jul (PH). Good finds among these southbound flocks included 17 American Avocets at Hawkeye 18 Jul (JF) and 24-32 at Horseshoe Lake 24 Jul (m.ob.), 15 Marbled Godwits at Hawkeye 19 Jul (JF), 5 Buff-breasted Sandpipers near Spencer, Clay 24 Jul (LS, JJ), 4 Western Sandpipers at Hawkeye 12 Jul (JF, BC, LS, et al.), and a Red- necked Phalarope in Clay 9, 14 Jul (LS). A Bonaparte's Gull in Johnson 21, 22 Jul and 2 in Marion 27 & 30 Jul were Iowa's fifth and sixth summer records in the past 10 years (BC, JF, SJD). An ad. Lesser Black- backed Gull 31 Jul at Eagle Bluffs (ph. BJ) was the region's and Missouri's second sum - mer record. The first was in July 1992 at Riv- erlands. In Missouri, 10 Least Tern nests with 23 eggs were found on a barge in the Missouri River at Riverlands; unfortunately, raccoons depredated most of the eggs (Lane Richter). Another nest on a sandbar near Pharrs Is - land below Clarksville, Pike (Justin Garrett) was the furthest upstream on the Mississippi River that Least Terns have attempted to nest in recent years. The Least Tern nesting colony at MidAmerican Ponds, Pottawattamie was ac - tive probably for the last time with 24 ads. and 5 nests 10 Jun (SJD) and 7 nests 28 Jun (JJ). Southbound Black Terns were common in both states (m.ob.) with 63 in Clay, IA 13 Jul (LS) and 38 at Smithville Lake, Clay, MO 23 Jul (Mary Nemecek) being the highest counts for each respective state. A pair of For - ster's Terns was building a nest at Dan Green Slough, Clay, IA 7 Jun (LS), and 3 fledglings were being fed by ads. at Trumbull 9 Jul (LS). Each state had two reports of Common Loon: in Missouri, these were 2 (basic) 1 Jun– 7 Jul and one remaining to 29 Jul at Longview Lake, Jackson (ph. Karen Davis, Sherry Leon - ardo, Eric Walters) and one 5 Jul at Stockton Lake, Cedar (PA) and in Iowa, 2 at Pleasant Creek R.A., Linn 1-21 Jun (JF) and 4 on Spirit Lake, Dickinson 18 Jun (LS, JJ). The Clinton spoil islands had 644 Double-crested Cormo - rant nests and 1,218 yg. and 503 American White Pelican nests and 1,170 yg. on 8 Jun (Brian Stemper fide SJD). Missouri's largest concentration of American White Pelicans was 118 at Eagle Bluffs 17 Jun (BJ). Bittern reports included single American Bitterns in five Iowa counties and up to 11 Least Bittern at Trumbull 9 Jul (JJ). The Great Egret colony at the Clinton spoil islands had 108 nests and 236 yg. on 8 Jun (Brian Stem - Trumbull was the grebe capital this sum- mer with 15 Pied-billed, 2 Red-necked, and 2 Western grebe broods 26 Jun (LS), and 5 Eared Grebe nests 2 Jul (LS, JJ). Elsewhere in Iowa, a Red-necked Grebe nest was at Big Wall Lake, Wright 5 Jun (RV) and ca. 10 Eared Grebe nests were at Pickerel Lake, Buena Vista (RV). A pair of Inca Doves that provided the first nesting record for Missouri and the region in fall 2015 continued into this summer and nested again in rural Vernon, MO (ph. BJ, et al.). The northernmost Chuck-will's-widows were 5 on 7 Jun and 2 on 19 Jul at Stephens S.F., Lucas 7 Jun (RA, PA, SJD). Missouri's largest concentration of Chimney Swifts was about 200 roosting in a chimney in Jefferson City, Cole 30 Jul (fide BJ). Iowa King Rails were one in Fremont 1-2 Jun (PR, eBird), one calling in Palo Alto 2-18 Jun (LS, †Jacob Newton, DA), and singles 24 Jul in Greene (†DT) and Wright (†SJD). Rails made a good showing in n. Iowa with as many as 8 Virginia Rails in four counties and up to 7 Soras in seven counties (m.ob., eBird). Common Gallinules were found in eight Iowa counties north to the Minnesota border including a brood in Winnebago (RV). Sandhill Crane continued its westward move - ment in Iowa with two broods in Story (SJD, DH), the first in more than a century. Since 1992, Sandhill Crane have been reported breeding in 31 Iowa counties. As many as 4 cranes were at Loess Bluffs 30 Jun–24 Jul (ph. PL, KB, m.ob.) but it is unknown if they were paired or attempted to nest. SHOREBIRDS THROUGH RAPTORS A Snowy Plover at Pleasant Creek R.A., Linn 1 Jun (Jim Fuller, JF), a holdover from spring, was Iowa's second summer record. Late northbound shorebirds in Iowa were 2 Black-bellied Plovers in Louisa 9 Jun (eBird), a Hudsonian Godwit in Monona 10 Jun (SJD), and a Dunlin in Mahaska 8 Jun (Bill Ohde). Nine Upland Sandpipers on a B.B.S. in Bar - ton, MO 6 Jun (SK) was a good count. Prob- able nesting shorebirds in Iowa were Upland Sandpipers in 25 counties, American Wood - cock in five counties west to Pottawattamie and Lyon, and an ad. and juv. Wilson's Phala - rope in Woodbury 19 Jun and 2 males and a juv. in Clay 9 Jul (eBird, LS, JJ). Late June arrivals included an American Avocet at Hawkeye 19 Jun (JF), a Willet in Palo Alto, IA 20 Jun (RV), and a Marbled God - wit and 6 Willets at Saylorville 26 Jun (SJD). Southbound Least Sandpipers, Greater Yel - lowlegs, and Lesser Yellowlegs were present by 30 Jun along the Thompson River, Living - son, MO (SK). An influx of shorebirds 6 Jul at MO); Hawkeye (Hawkeye W.A., Johnson, IA); Horseshoe Lake (Horseshoe Lake, Buchanan, MO); Loess Bluffs (Loess Bluffs N.W.R., Holt, MO; formerly Squaw Creek N.W.R.); Otter Slough (Otter Slough C. A., Stoddard, MO); Riverlands (Riverlands Migratory Bird Sanc - tuary, St. Charles, MO): Saylorville (Saylorville Reservoir, Polk, IA); ); Shimek (Shimek S.F., Lee and Van Buren, IA); Trumbull (Trumbull Lake, Clay, IA). DUCKS THROUGH CRANES For the ninth summer in the past 12, Black- bellied Whistling-Ducks were found in the region; this summer the reports came from Missouri, with 3 at Horseshoe Lake 15-31 Jul (ph. LL, m.ob.) and 3 at Mingo N.W.R., Stoddard 24-29 Jul (Brad Pendley). Lingering waterfowl included 3 Greater White-fronted Geese at Otter Slough 10-24 Jun (ph. Rob Francis, MH, m.ob.) and one at Riverlands throughout the period (ph. Jacob Drucker, TP, BR, Joshua Uffman, m.ob.), a Snow Goose at Forest Park, St. Louis City, MO through - out the period (ph. CS, BR, m.ob.), a Ross's Goose in Cerro Gordo, IA 23 Jun (RG), a Gad - wall at Pershing S.P., Linn, MO 9-31 Jul (SK), one or 2 American Wigeons in Cerro Gordo, Clay, and Plymouth, IA (RV, LS, SJD), 2 and 4 Northern Pintails at Riverlands and Otter Slough 4 and 24 Jun respectively (ph. BR, CS, MH, m.ob.), 2 Green-winged Teal at River - lands 30 Jun (ph. TP), 6 Canvasbacks in Lee, IA 19 Jul (SJD), a Red-breasted Merganser at Riverlands 5-25 Jun (ph. BR, TP), and a Ruddy Duck at Otter Slough 24 Jun (MH). Noteworthy waterfowl broods were produced by Northern Shoverler in four Iowa counties (LS, DA, SJD), Northern Pintail in Clay and Hancock, IA (eBird, SJD), and Redhead and Ring-necked Duck at Trumbull (LS, JJ). The latter seems to be the first in the region in at least two decades. Northern Bobwhite did well at the north - ern edge of its range with reports from 31 Iowa counties north to Woodbury (m.ob.). Several s. Iowa B.B.S. counts had the high - est totals in recent years with 40 in Appanoose and Davis (TJ) and 53 in Page and Fremont (KVS). Two Gray Partridge in Clayton (Paul Skrade) and a brood in Polk (SJD) were out - side of that species' usual n.-cen. Iowa range. Increasingly scarce in ne. Iowa, Ruffed Grouse reports were 4 in Clayton 18 Jun (eBird) and one in Allamakee 30 Jun (RG). The recent re - lease of 100 Greater Prairie-Chickens from Nebraska at Dunn Ranch, Harrison, MO and Kellerton W.A., Ringgold, IA, continued efforts to augment a dwindling population. Counts at leks suggested a population of about 150 birds (Stephanie Shepherd).

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