Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
LLWOLF
1964
Aimophila betherii
July 9 Laguna Atascosa Refuge, Cameron Co., Texas
most of foraging area covered seemed to be around Spartina
but in areas where other grasses + composites provided space
between clumps of bunch grass which facilitate movement
+ gives some bare areas
0700 - both birds flew to us. 1st dropped into grass + 2nd flew up to
near top of Celtris. As I approached 1st to Celtris + 2nd flew off
to S. 10' yds. to another Celtris.
0702 - both fly to NW. - one ca 10' behind other, flying
24 feet above tops of Spartina. Flight seemed to be direct with no
0708 - flushed P#4 from grass, flew up to dead thub 3' up, scratched
one wing. then perched + chirped softly. M#6 + #4 began courtin -
singing each in top 10', dead tree. M#6 mostly trill songs while
#4 continuous song. M#6 stops + another M (M?) begins.
then M#(1?) stops + M#6 sings for 2-3 songs.
0734 - M#2 flew from E-edge of fern, to clump of bushes 3+ feet
high + sang. then across to other side of road (S) when sang + foraged
in roadside weeds then further to S. (70-80 yds) where set in top of
mesquite + periedy scratched (over wing), + began singing continuous
song. Another bird began singing to SE + M#2 flew back to E
edge of fern when lit on small (2') mesquite. Sang for 10+ sec then
silent.
0739 - two M singing simultaneously - sounds like M #7 + M #3
both S of road + SE where M#2 sang. one to SE + one to SW
probably M #? is identical with M #5