Acorn woodpecker species accounts, v4459
Page 27
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
1987. M. Stanback M. Formicivorus Plige HNJR 12 April 0900 Climb hole. 2 eggs inside. Labeled new one #2. Shit, I hope the birds don't abandon because of the workmen's power saws or hammers or wanderings below the nest. 13 April: Eggs tossed 17 April 0600 Bird at hole 1700 1 egg in nest (#1) 18 April 1730 2nd egg labeled as #3 !! 19 April 0900 Only 2 eggs! 20 April 1700 3rd Egg labeled #2) 21 April 1800 4 eggs (labeled #4) Walter found only 3 at 0830 2 May 1500 Well, I had my chance to measure them just now and I blew it - I guess there's anuf data out there on egg size - lay order. Anyway egg #2 (thivel egg laid) is pipping. 3 May 1330 Bad News. There were 2 chicks in the nest. No other eggs or chicks. Both parts of both chicks eegs were still inside (#1 & #2) Thus I'm fairly certain the others did not hatch. I think they were tossed. Question is was it the experimental 2 or was this yet another case of "at-hatching tossing"? RL = 5.42 (probably egg #2) LL = 4.30 (#1) 4 May 1300 RL = 7.3, LL = 5.2 5 May 1300 RL = 9.6 LL = 8.25 6 May 1800 = 15.9 13.6 7 May 1200 17.8 NURSERY = S 14.6 = -