IANGE EXTENSION

First occurrence of Literature Cited •ieOliveira Pinto, Oliverio Mfirio. Cat•logo das Aves do Brasil-- 2da. parte. Publi- the Fork-tailed Flycatcher cacaodo Departamentode Zoolog[a,Sec- retaria da Agricultura, Indfistriae Com6r- at , cio. San Paulo -- Brasil, 1944. de Schauensee,R. M. The Speciesof Birdsof South America with their Distribuition. LivingstonPublishing Company, 1966. Merling K. Alorni __., A Guide to the Birds of South America. LivingstonPublishing Company, 1970. __., The Birdsof Colombiaand Adjacent Areas of South and Central America. Liv- erences,this tyrant migratesas far south ingstonPublishing Company, 1964. 1971,E HAVE the BEENavifauna STUDYING. of the Peru-since as Rio Negro in Argentina, and it vian , and especiallyLake Tit- arrives at the Argentinian capital at the icaca's basin. We have recorded hun- end of September. It has apparently dreds of pictures of the different species never been recorded in the Peruvian Alt- which inhabit this high Peruvian- iplano before. Andean habitat. Together with Pro- This recordnow extendsthe rangeof fessor F. De-Lucchi we have made sev- the Muscivora tyrannus up to high eral excursions throughout the region altitude zones, at least in the site above and during those excursions we were mentioned, in its route to its winter amazedby the variety of bird life in the quarters in the South American conti- Altiplano. Lake Titicaca lies at an eleva- nent. The present record, adds a new tion of 12,'500 feet, 500 feet below the speciesto the large total of the Peruvian Photographof Mus½ivoratyrannus. Oct. 5, 1974, in L!ata, Titicaca (-PERU) by average level of the irregular plateau Altiplano's avifauna. Fernando De-Lucchi. called Altiplano, in which it lies. We were really surprised to record one specieswhose range is supposedly only in tropical areas. This is the Fork- tailed Flycatcher(Muscivora tyrannus). PERU The discovery was made on October 5, 1974 on the northern side of Lake Titi- caca, in the vicinity of Llata, which is 3 km from Conima, and about 60 km east of Juliaca in the , in Peru. Professor De-Lucchi was able to photographthe bird. The bird was alone on the very shore of the Lake Titicaca. It was seen perch- ing among bushesand stonesof the lake nearby, catching insects.Since the bird was alone and no other like it was seen in the vicinity, we surmisedthat it was a vagrant. For about 15 minutes the bird was at a distanceof about 50 metersonly slightly above eye level, at times against a background of blue sky, but most of Juli e the time in front of bushy or stony background, which-permitted a clear view of it. The observations permitted clear recognition, and under the cir- cumstanceswe feel that there is no pos- sibility of error in our identification. Muscivora tyrannus, the striking Fork-tailed Flycatcher, is a widespread South American specieswhose lack of records for the Titicaca area until now, 20 km doubtlessreflects the scanty field work in this area. According to available ref- Map of Lake Titicaca.

254 AmericanBirds, May 1979