Paris Apr. 2 Mission River at Refugio 50 ft, Refugio Co., Texas I walked S again after 10:40 moving along the riverbank then inland. At 10:48 I heard sit sit then wet wet wet louder and two birds flew into tree adjacent to one where I had gathered nest material earlier. Two birds there; proceeding soon separated and one started to gather nest material, other silent in clumped tree nearby. I took the ♀ (#528) with moss in her beak, then the ♂ which perched motionless in dense twiggery, then shifted to point where I could see him (#529). I collected some plant specimens and checked the distance from point where moss being collected to nest, about 120 yards. The woods here were dense with some trailing vines, the aspect reminding me somewhat of the bottom timber along the Rio Grande. See plant catalogue and journal for further details. I walked a few yards W of the nest tree at 11:20 and heard song and "Tee see suh, suh dat" or "Tee see suh, uhk dat" a call given by the singing bird when I approached within his view. Bird was in scrubby growth (nequitie, a diomnaceous shrub, etc.) NW of the oil refinery or pump; thus about 40 yards W of the nest tree. He sang steadily when I moved back out of view and seemed to be alone. I took him about 11:32 after watching him. - His behavior contrasted to #529. The three birds taken were the only Catnice I saw in this area of something over half a mile of riverbank. I had an impression that the season here was in advance of that on the Granas as far as vegetation was concerned. Left the area at 12:00.