Viewing page 4 of 751


Atlapetes, I    
March 12, 1959
Barro Colorado

I caught a yellow-throated Atlapetes in my nets at Cerro Punta before leaving. Like so many other species there, they were quite silent when handled. 

When I brought them here, we banded them (1 blue and 1 red), and let them loose in the cage with the one surviving yellow-throat from my previous trip to Cerro Punta. I think that one or both of the new birds uttered a couple of single, rather liquid-sounding "chirp" notes when first released. After that I only watched them for about 5 minutes (as I wanted to let them settle down in peace). During this period there was a lot of active hopping & flying back & forth by all 3 birds; but they were all quite silent throughout Silence is obviously one of the most distinctive characters of Atlapetes I think that during these movements the old bird was more often advancing toward the new ones, and the new ones retreating before the old one, more often than the reverse; but both types of movement did occur. There were no signs of actual fighting. The old bird often stood with its feathers arranged in a rather distinctive way. Definite CR, emphasizing the white crown stripe. Yellow throat fluffed, but not ruffled; just looking swollen. (I shall call this. "Thf"). This CR and Thf is very reminiscent of brunnei-rucha; but much less extreme. The old bird combined its CR and Thf with a variety of postures. Standing high, crouching low and forward, etc. etc. All sorts of obviously


Transcription Notes:
image - drawing of bird described in notes

Please note that the language and terminology used in this collection reflects the context and culture of the time of its creation, and may include culturally sensitive information. As an historical document, its contents may be at odds with contemporary views and terminology. The information within this collection does not reflect the views of the Smithsonian Institution, but is available in its original form to facilitate research. For questions or comments regarding sensitive content, access, and use related to this collection, please contact