two birds, 1 to, mostly, 3 meters up in dense, leafless mesquites; in almost constant motion of some type, but only moving laterally about 5 m in 15 minutes; crests up, tail being fanned or flicked, wings drooped and moved; the pair generally within 1 meter of each other, often much closer, but no contact observed; frequent changes of perch; interpreted as courtship or pair formation; interval shortened at 2:25 by 39 seconds to remove partial annotation;

bird-seen:yes

playback-used:no

burry calls of attending adult while foraging and high begging calls of fledged juvenile; interval altered at 1:42, 2:57, and 5:09;

bird-seen:yes

playback-used:no

Two recordings. Amplified recordings

bird-seen:yes

playback-used:no

wildtronics mono amplified DR05 tripod

bird-seen:no

playback-used:no

two, then three birds, 1-2 m up in thickets of dense beach scrub, not clear to me if it is competitive or within family interactions; interval shortened at 2:40 for some calls; a few songs and a useful variety of calls;

interactions calls of two birds low in mesquites, near each other and not battling

bird-seen:yes

playback-used:no

interaction calls of a pair (rather than territorial) (interactions seemingly not very intense or focused, but obviously a considerable amount of relaxed energy in this); 1st recording of these birds today, in turn the divided 1st part of the 1st cut

playback-used:no

pair interaction call and, interval shortened, a song;

bird-seen:yes

playback-used:no

bird-seen:yes

playback-used:no

mic. parabólico MA1Len 13' en Tascam DR-40X

bird-seen:yes

playback-used:no

bird-seen:yes

playback-used:no

Arroyo Agua Marina; dawn song, but about 15 minutes after official sunrise on an overcast morning, so post normal dawn song period; from canopy of TDF;

bird-seen:yes

playback-used:no

family group, mostly begging calls, also some chatters by adults; 2nd recording of this group today

bird-seen:yes

playback-used:no

singing while preening, inside the top branch of a 10 m hackberry, taking off at the end; interval shortened at 2:29, two birds interacting; interval shortened at 3:13 for long recording of two adults with interaction calls, often very soft, often in different, adjacent trees at medium height, but also near each other at times; song was often given as before by a bird doing much preening in between songs; some close, loud parts, e.g., 6:20 to 8:15, then nothing for a minute, then more widely spaced (fairly easy to spot it all on the sonagram); grade A-C; another useful period 11:35 to 12:37;

2nd recording of this individual today

playback-used:no

interaction calls of a pair; long cut divided into two, this the second part

bird-seen:yes

playback-used:no