mean number of nest attempts/ female/ season mean number of successful broods/ female/ season mean number of fledglings/ fpsn 3.4 P&G 1995 cite 3.4 for unparasitized nests, but 0.2 for parasitized nests successful nest mean number of fledglings/ ARS female/ season (ARS) Annual adult survival phi 0.65^(1/365)=0.9988 Returns of color-banded adult males (>1 yr old) in thoroughly searched areas of a study site in central Texas indicate annual survivorship between 0.55 and 0.75 (Grzybowski 1991). Frequency on Mean: 0 Based on habitat (Table 2), low frequency on field is expected for agricultural habitats. Min: 0.1 Individuals may forage on agricultural fields. Max:0.2 Residency Edge Based on habitat (see Table 2) Passerine? Yes Precocial/ altricial No Table 16. Least Bell's vireo (Vireo bellii pusillus). Species life history parameters Model Typical Rationale/Comments Code value daily probability of nest initiation p 0.25 Default used. See USFWS 5 yr plan adults arrive earlier on breeding grounds than – juveniles daily mortality rate during laying & m1 0.9770 from USFWS 5yr plan see Hendricks and Rieger 1989. Nest success ranges from 33-89 % incubation long-term average 41-74%. Kus et al. 2010: 51% +/- 0.2 Mayfield. Assuming a 29-day nest cycle (14 days of incubation + 12 days of nestling + 3 days. Latter 3 days comes from assuming a 4-egg clutch with 1-day egg-laying interval + onset of incubation with penultimate egg). Therefore, assuming 51% overall nest survival rate, daily survival must be the 29th root of 0.51 = 0.9770 mortality rate during nestling m2 0.9770 refs to B. Kus. In USFWS 5 yr plan. See calculation above for m1. rearing date of first egg of first nest T1 28 March 28-March first egg of first nest.
mean number of nest attempts/ female/ season mean number of successful broods/ female/ season mean number of fledglings/ successful nest fpsn 3.4 P&G 1995 cite 3.4 for unparasitized nests, but 0.2 for parasitized nests mean number of fledglings/ female/ season (ARS) ARS Annual adult survival phi 0.65^(1/365)=0.9988 Returns of color-banded adult males (>1 yr old) in thoroughly searched areas of a study site in central Texas indicate annual survivorship between 0.55 and 0.75 (Grzybowski 1991). Frequency on Mean: 0 Min: 0.1 Max:0.2 Based on habitat (Table 2), low frequency on field is expected for agricultural habitats. Individuals may forage on agricultural fields. Residency Edge Based on habitat (see Table 2) Passerine? Yes Precocial/ altricial No Table 16. Least Bell's vireo (Vireo bellii pusillus). Species life history parameters Model Code Typical value Rationale/Comments daily probability of nest initiation p 0.25 Default used. See USFWS 5 yr plan – adults arrive earlier on breeding grounds than juveniles daily mortality rate during laying & incubation m1 0.9770 from USFWS 5yr plan see Hendricks and Rieger 1989. Nest success ranges from 33-89 % long-term average 41-74%. Kus et al. 2010: 51% +/- 0.2 Mayfield. Assuming a 29-day nest cycle (14 days of incubation + 12 days of nestling + 3 days. Latter 3 days comes from assuming a 4-egg clutch with 1-day egg-laying interval + onset of incubation with penultimate egg). Therefore, assuming 51% overall nest survival rate, daily survival must be the 29th root of 0.51 = 0.9770 mortality rate during nestling rearing m2 0.9770 refs to B. Kus. In USFWS 5 yr plan. See calculation above for m1. date of first egg of first nest T1 28 March 28-March first egg of first nest.
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