Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
1981 R.L. Mumme
3
Melanerpes formicivorus
1500
(27 April) Nest checked 0945. A new egg, marked #3 and returned.
Probably laid about 0745 or so.
28 April Nest checked 1800. Egg #4, laid today, marked and returned.
Eggs warm. Incubation probably in progress.
29 April Nest check 1600. Egg #5, laid today, marked
3 May Nest check 1230 6 eggs! The sixth probably
laid 30 April, or conceivably 1 May. #6 still
looked fairly fresh.
(1) 25.0 x 19.7 (25 April)
(2) 25.2 x 20.3 (26 April)
(3) 24.3 x 20.2 (27 April)
(4) 24.5 x 20.1 (28 April)
(5) 24.6 x 19.8 (29 April)
(6) 24.7 x 19.6 (30 April) (or 1 May)
11 May Nest checked 1530 All 6 eggs have hatched.
① Blue back stripe 14.5g
② Blue Rwing & heel 13.3g
③ Blue L wing & heel 11.0g
④ Green R flank 9.8g
⑤ Unmarked 4.5g
⑥ runt (green all over) not weighed
All hatched by 12th day after clutch
completion. I would bet that at most only 4 of
these guys will make it.
17 may Nestcheck 1330. Sorry to report that not a trace
of the food coloring marks is still visible after 6 days
Anyway 4 nestlings: I'm sure that the 2 really