Additions to the Avifauna of Bolivia
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Condor, 82:69-75 0 The Cooper Ornithologml Society 1980 ADDITIONS TO THE AVIFAUNA OF BOLIVIA J. V. REMSEN, JR. AND ROBERT S. RIDGELY ABSTRACT.-Records of 30 species are newly reported for Bolivia, based on the authors ’ field work and hitherto unpublished museum specimens. Three additional difficult-to-identify species are reported without specimen or pho- tographic evidence. Some of the records could have been expected while others indicate notable range expansions. In 1976 and 1977, we saw many species of Elanus leucurus. White-tailed Kite. Pre- birds in Bolivia not previously reported viously unreported from Bolivia (Meyer de from that country. Subsequent investiga- Schauensee 1966, 1970), the White-tailed tions concerning Bolivian bird records led Kite seems now to be widespread in south- to the discovery of a number of additional ern Bolivia at the base of the Andes and in species new to Bolivia represented by pre- well-watered intermontane valleys. Ridge- viously unpublished specimens in the Lou- lys’ specific observations were as follows: a isiana State University Museum of Zoology pair near Pampa Grande, western Dpto. (LSUMZ). All were collected by Franz Santa Cruz, on 9 and 29 April 1977; a pair Steinbach of Cochabamba, unless stated near San Isidro, western Dpto. Santa Cruz, otherwise. We report below on our records on 10 and 23-26 April 1977; a single and a and the Steinbach specimens. pair north of Camiri, extreme southern Localities frequently referred to in the Dpto. Santa Cruz, on 1 May 1977; a pair species accounts are: (1) Tumi Chucua, north of Machareti, eastern Dpto. Chuquisa- along the Rio Beni near Riberalta (Dpto. ca, on 3 May 1977; and a pair near Villa- Beni), described in detail by Pearson montes, eastern Dpto. Tarija, on 4 May (1975a, 1975c); (2) Estancia Inglaterra, a cat- 1977. This kite, which has recently expand- tle ranch along the Rio Yata (Dpto. Beni), ed its range and numbers dramatically in 66”25W,’ 14”43S;’ the habitat is a mixture of Middle America (Eisenmann 1971), may marsh, grassland, savanna, and gallery for- well have spread into Bolivia from adjacent est; (3) Buena Vista, elev. 400 m, Prov. Ich- northwestern Argentina, where it is now ilo (Dpto. Santa Cruz), a locality worked in- fairly common (Ridgely, pers. observ.). tensively through the years by J. Steinbach Harpyhaliaetus solitarius. Solitary Eagle. and Franz Steinbach; (4) the vicinity of the Although recorded regularly only as far city of Cochabamba, 2,570 m (Dpto. Coch- south as central Peru (Brown and Amadon abamba). 1968, Blake 1977), a single record from northwestern Argentina (in Blake 1977) in- ESTABLISHED RECORDS dicates this species should occur in southern Podilymbus podiceps. Pied-billed Grebe. Peru and Bolivia. A specimen (LSUMZ There is apparently no published record 35663) was taken at El Palmar, Prov. Cha- from Bolivia for this widespread species pare (Dpto. Cochabamba) on 20 Nov. 1948. (Blake 1977). Six specimens (LSUMZ Ridgely also photographed one (LSUMZ 35579, 35580, 36954-36957) were taken at Photo File) in an arid intermontane valley Cochabamba in Feb., March (2), May, July, northeast of San Isidro, ca. 1,500 m (Dpto. and Dec. (1954-1958). Another specimen Santa Cruz) on April 1977, and saw another (LSUMZ 35581) was collected on 12 Dec. pair in more typical, forested habitat in the 1943 at San Carlos, 400 m, Prov. Ichilo Chapare region SW of Villa Tunari, ca. 900 (Dpto. Santa Cruz). Ridgely saw at least six m (Dpto. Cochabamba) on 20 March 1977. individuals on 2 May 1977 northeast of Bo- Spizastur melanoleucus. Black-and-White yuibe, extreme southern Dpto. Santa Cruz. Hawk-Eagle. Although reported to occur in Dendrocygna bicolor. Fulvous Whistling- Bolivia by Brown and Amadon (1968) and Duck. As with the previous species, there Short (I975), there is apparently no pub- is apparently no published record from Bo- lished specimen record (Blake 1977). A livia (Blake 1977). A specimen (LSUMZ specimen (LSUMZ 37088) was taken at 37006) was collected at Buena Vista by J. Buena Vista on 25 July 1947. Additionally, Steinbach on 30 Jan. 1926. Remsen saw this species once in wet savan- I691 70 J. V. REMSEN, JR. AND ROBERT S. RIDGELY na habitat at Ea. Inglaterra on 1 Dec. 1976 (Blake 1977). A specimen (LSUMZ 35650) and once over disturbed tropical forest near was taken on 10 March 1945 at Buena Vista. Villa Tunari, Prov. Chapare (Dpto. Cocha- A second specimen taken at Rio Yapacani, bamba) on 19 Jan. 1977. In both cases the Prov. Ichilo (Dpto. Santa Cruz) on 18 April birds were distinguished from the similarly 1945 was exchanged to the Instituto “Miguel plumaged immature Gray-headed Kite Lillo,” Tucumbn, Argentina. (Leptodon cayanensis) by shape; the latter Larus pip&an. Franklins’ Gull. This mi- has relatively broader, shorter wings and gratory gull, breeding in interior North broader, longer tail than Spizastur. Ridgely America, was recently reported in South also saw one near San Matias, extreme America away from the Pacific coast for the northeast Dpto. Santa Cruz, on 26 March first time by Hughes (1977) on the Peruvian 1977. shore of Lake Titicaca. On 10 March 1977, Pandion haliaetus. Osprey. The range along the southeastern shore of Lake Titi- given for this species by Brown and Ama- caca on the Bolivian shore (elev. 3,810 m), don (1968) includes much of Bolivia, but Ridgely observed considerable numbers of apparently there are no published records this species consorting with much larger from the country (Blake 1977), except for numbers of the Andean Gull (Larus serran- those of Pearson (1975c) from Tumi Chu- us). At least 300 were counted in a series of cua. Remsen also saw this species at Tumi flocks between Huatajata and Huarina, Chucua, from one to four per day 5-20 Nov. Dpto. La Paz. Compared to L. serranus, the 1976 and 30 Dec. 1976 to 13 Jan. 1977. Rem- Franklins’ Gulls were notably smaller with sen also saw single Ospreys at Ea. Inglater- much darker mantles. Ridgely observed ra on 10 and 15 Dec. 1976 and one to four another Franklins’ Gull, also with Andean birds on six days between 2 and 12 Feb. Gulls, in adjacent Peru on a smaller lake 1977 in the Parque National Isiboro-Secure near Laguna Saracocha (elev. ca. 4,000 m), area described below under Cathartes bur- Dpto. Puno, 6 Mar. 1977. rovianus. Sterna hirundo. Common Tern. Inland Falco peregrinus. Peregrine Falcon. The records of this species in South America range given for Falco peregrinus by Brown have recently been summarized by Di- and Amadon (1968) includes Bolivia, but Costanzo (1978). Remsen saw an immature apparently there are no published specimen Common Tern on 5 Nov. 1976 at Tumi Chu- records (Meyer de Schauensee 1966, Blake cua, one of the same Bolivian localities 1977). A specimen (LSUMZ 37111) was tak- where a banded bird was recovered a year en at Chipiriri, 300 m, Prov. Chapare (Dpto. later (DiCostanzo 1978). Remsen saw two Cochabamba) on 8 Nov. 1962. Remsen also birds there again on 8 Nov. 1976. The rel- saw this species in Bolivia at Lago Uru-uru atively long bill and neck and rather broad, (Dpto. Oruro) on 29 Jan. 1977 and at Coch- blurry black tips to the undersides of the abamba on 24 Feb. 1977; both individuals primaries were noted, eliminating the very were in immature plumage, as is the spec- similar (but highly unlikely inland) Arctic imen Ridgely found this species to be rath- Tern (Sterna paradisaea; which has a rela- er numerous in the Pulquina and Lagunilla tively shorter bill and neck and very sharply areas, Dpto. Santa Cruz; one or two, mostly defined black tips on undersides of prima- adults, were seen daily 22-28 April 1977; ries). A S. hirundo specimen (LSUMZ none, however, was in the area in March. 37200) from Bolivia was taken at Cochabam- He also saw another south of the city of San- ba on 1 Dec. 1954. ta Cruz on 29 April 1977. It seems likely Another inland record, not mentioned by that this species is a widespread migrant in DiCostanzo (1978), is that from Limonco- Bolivia. cha, Prov. Napo, Ecuador on 27 Dec. 1975 Falco deiroleucus. Orange-breasted Fal- (Tallman and Tallman 1977; LSUMZ 82871). con. Although occurring in northwestern It seems likely that this species will prove Argentina and eastern Peru (Meyer de to be a regular but rare migrant in Novem- Schauensee 1966, Blake 1977), there is no ber and December in interior South Amer- Bolivian record for this rare and spottily dis- ica. It is unlikely, however, that these birds tributed species. A specimen (LSUMZ are following rivers inland thousands of 37112) was taken at Buena Vista on 20 Nov. miles from the coast, and 90” away from 1944. It is likely that this species occurs lo- their normal north-to-south direction of cally in eastern Bolivia, as assumed by Brown movement at this time of year, as proposed and Amadon (1968). by DiCostanzo (1978). More likely, these Accipiter superciliosus. Tiny Hawk. This inland records pertain to overland, north- species has not been recorded from Bolivia south migrants; this species exhibits this BOLIVIAN AVIFAUNA 71 same pattern in interior North America. All (1975b, c) at Tumi Chucua. A specimen inland records to date are along rivers be- (LSUMZ 37520) was taken at Buena Vista cause these are the only localities with both on 20 Feb. 1964. Remsen found this species observers and suitable habitat. to be one of the most frequently seen birds Anodorhynchus hyacinthinus. Hyacinth in the savannas at Ea. Inglaterra. It was re- Macaw. Heretofore recorded only from Bra- corded every day but one between 23 Nov.