Marshall, 1942 Myadestes unicolor Los Escumiles, Dept. Chalatenango, El Salvador March 7 2 (together) seen flitting quietly thru grove young white pines on a ridge - near cloud forest. Assumed to be this sp. !!!!! March 10 in cloud forest (orchid-ock) habitat - took down hyloichla-like song & saw this bird (2045-shel) sitting quietly on twig 50 ft up singing. About 1 song/min, stops for some min after flying to another tree. Seen later with another - both flitting from twig - twig - 2045 singing. Could then determine identity of all the cloud-forest singers - a very common bird - sing all thru day (sunny today) but esp. early & late - Song lasts longer than Hyloichla - about as long as M. townsendi - phases of beautiful & tones rich in overtones, wide range pitch quality of a Hyloichla (low notes especially) - This most notes are low & full - doesn't work up high like Hyloichla. Ends usually with trill ~ trill ending of H. mustelina. Reorganizes song about every 15 min. March 14 2078 & taken - middle parts cloud forest trees. Variation of song; heard in midday & evening - but not full song - phrases separated - continuous, but slow. Some harsh trills introduced ! March 15 2094 & taken in cloud forest - most persistent singer. March 22 & 2146 singing in pine, windy day, on ridge - 50 yd from cloud forest