Calcarius ornatus

Chestnut-collared Longspur

Maximum lifespan

5 yr

USGS longevity records

mtDNA size

16,815 bp

RefSeq NC_053083.1

GC content

46.48%

Whole genome

Non-coding

1,335 bp

D-loop 1,249 bp

Where Chestnut-collared Longspur sits among 2,335 species

Whole-genome GC content against maximum lifespan. Chestnut-collared Longspur has the 2,025th longest lifespan of them.

This species
Other birds
Other classes

Plot other mtDNA features with this species highlighted

Base composition

Whole genome16,815 bp

GC skew (G − C) / (G + C): −0.378
AT skew (A − T) / (A + T): +0.140

Life history

Maximum lifespan: 5 years

Lifespan from USGS Bird Banding Laboratory · USGS longevity records

About this record

Lifespan source: NABBP Longevity Records v2025.1
Based on: an animal in the wild
Data quality: acceptable
Licence: U.S. Government work
Status: New in build 2
In the database since: build 2 (2026-11-13)

Provisional: the EURING list could not be retrieved, so the USGS record is used.

Every change against the 2015 build is in the changelog download.

Composition by region

Reference (L) strand as deposited in RefSeq

Whole genome16,815 bp

Protein-coding11,380 bp

12S rRNA977 bp

16S rRNA1,596 bp

All tRNA1,539 bp

D-loop1,249 bp

Genes and regions

Select a column to sort; select a gene to compare it across species

Base composition of Calcarius ornatus genes

ND1NADH dehydrogenase subunit 1	978 bp	27.1%	25.3%	14.7%	32.9%	47.65%	−0.382	+0.035
ND2NADH dehydrogenase subunit 2	1,040 bp	29.9%	22.7%	11.0%	36.4%	47.40%	−0.538	+0.137
COX1Cytochrome c oxidase subunit I	1,551 bp	28.5%	24.6%	16.6%	30.3%	46.94%	−0.291	+0.074
COX2Cytochrome c oxidase subunit II	685 bp	29.6%	21.8%	15.2%	33.4%	48.61%	−0.375	+0.153
ATP8ATP synthase F0 subunit 8	168 bp	29.8%	26.2%	7.7%	36.3%	44.05%	−0.649	+0.064
ATP6ATP synthase F0 subunit 6	684 bp	30.1%	23.4%	11.0%	35.4%	46.41%	−0.527	+0.126
COX3Cytochrome c oxidase subunit III	785 bp	27.6%	22.9%	15.8%	33.6%	49.43%	−0.361	+0.093
ND3NADH dehydrogenase subunit 3	351 bp	30.2%	27.4%	11.4%	31.1%	42.45%	−0.463	+0.050
ND4LNADH dehydrogenase subunit 4L	297 bp	27.9%	22.9%	12.1%	37.0%	49.16%	−0.507	+0.099
ND4NADH dehydrogenase subunit 4	1,378 bp	31.0%	21.9%	11.4%	35.7%	47.10%	−0.516	+0.171
ND5NADH dehydrogenase subunit 5	1,818 bp	31.1%	22.5%	11.8%	34.7%	46.43%	−0.493	+0.160
ND6NADH dehydrogenase subunit 6	519 bp	39.1%	10.2%	9.1%	41.6%	50.67%	−0.643	+0.586
CYTBCytochrome b	1,143 bp	28.7%	23.9%	13.2%	34.2%	47.42%	−0.443	+0.092
12S rRNA12S ribosomal RNA	977 bp	30.2%	20.8%	21.7%	27.3%	49.03%	−0.115	+0.185
16S rRNA16S ribosomal RNA	1,596 bp	34.3%	20.9%	19.8%	25.0%	44.80%	−0.116	+0.242
D-loopControl region (D-loop)	1,249 bp	29.3%	26.3%	12.6%	31.8%	44.36%	−0.433	+0.053

Codon usage

Counts per codon, darker is more frequent

Gene

3,796 codons in all protein-coding genes. Grouped with the Vertebrate mitochondrial code (NCBI table 2).

Phe F5.8%

UUU32

UUC187

Leu L17.5%

UUA64

UUG20

CUU53

CUC129

CUA339

CUG60

Ile I7.6%

AUU56

AUC232

Met M4.2%

AUA112

AUG49

Val V5.2%

GUU29

GUC61

GUA80

GUG27

Ser S7.4%

UCU37

UCC89

UCA88

UCG12

AGU6

AGC50

Pro P5.9%

CCU35

CCC89

CCA96

CCG5

Thr T8.4%

ACU38

ACC136

ACA136

ACG7

Ala A8.3%

GCU52

GCC159

GCA88

GCG15

Tyr Y3.0%

UAU17

UAC97

His H2.6%

CAU14

CAC85

Gln Q2.5%

CAA91

CAG4

Asn N3.7%

AAU16

AAC123

Lys K2.2%

AAA78

AAG6

Asp D1.8%

GAU13

GAC56

Glu E2.4%

GAA76

GAG14

Cys C0.8%

UGU6

UGC23

Trp W2.8%

UGA98

UGG7

Arg R1.9%

CGU8

CGC14

CGA48

CGG3

Gly G5.8%

GGU18

GGC60

GGA110

GGG34

Stop 0.2%

UAA5

UAG1

AGA1

AGG2

Genome map

38 annotated features in NC_053083.1

Hover, tap or tab to a feature to see its position, length, strand and GC content. Genes and rRNAs open their own pages.

Protein-coding13
rRNA2
tRNA22

Outer ring: + strand, arrows run clockwise. Inner ring: − strand.
Middle ring: GC% of each gene against the whole genome (46.5%, dashed): out is GC-richer, in is AT-richer (full height = 6 points).

Not drawn: D-loop 2,784–16,815, annotated over most of the record.

All 37 features as a table

Annotated features of Calcarius ornatus (NC_053083.1)
Feature	Type	Start	End	Length	Strand	GC
tRNA-Phe	Transfer RNA	1	68	68 bp	+	–
12S rRNA	Ribosomal RNA	68	1,044	977 bp	+	49.0%
tRNA-Val	Transfer RNA	1,044	1,112	69 bp	+	–
16S rRNA	Ribosomal RNA	1,113	2,708	1,596 bp	+	44.8%
tRNA-Leu (UUR)	Transfer RNA	2,709	2,783	75 bp	+	–
ND1	Protein-coding gene	2,806	3,783	978 bp	+	47.7%
tRNA-Ile	Transfer RNA	3,791	3,862	72 bp	+	–
tRNA-Gln	Transfer RNA	3,868	3,938	71 bp	−	–
tRNA-Met	Transfer RNA	3,938	4,006	69 bp	+	–
ND2	Protein-coding gene	4,007	5,046	1,040 bp	+	47.4%
tRNA-Trp	Transfer RNA	5,047	5,116	70 bp	+	–
tRNA-Ala	Transfer RNA	5,118	5,186	69 bp	−	–
tRNA-Asn	Transfer RNA	5,195	5,267	73 bp	−	–
tRNA-Cys	Transfer RNA	5,268	5,334	67 bp	−	–
tRNA-Tyr	Transfer RNA	5,335	5,404	70 bp	−	–
COX1	Protein-coding gene	5,406	6,956	1,551 bp	+	46.9%
tRNA-Ser (UCN)	Transfer RNA	6,948	7,020	73 bp	−	–
tRNA-Asp	Transfer RNA	7,026	7,094	69 bp	+	–
COX2	Protein-coding gene	7,103	7,787	685 bp	+	48.6%
tRNA-Lys	Transfer RNA	7,788	7,856	69 bp	+	–
ATP8	Protein-coding gene	7,858	8,025	168 bp	+	44.1%
ATP6	Protein-coding gene	8,016	8,699	684 bp	+	46.4%
COX3	Protein-coding gene	8,706	9,490	785 bp	+	49.4%
tRNA-Gly	Transfer RNA	9,490	9,558	69 bp	+	–
ND3	Protein-coding gene	9,559	9,909	351 bp	+	42.5%
tRNA-Arg	Transfer RNA	9,911	9,981	71 bp	+	–
ND4L	Protein-coding gene	9,983	10,279	297 bp	+	49.2%
ND4	Protein-coding gene	10,273	11,650	1,378 bp	+	47.1%
tRNA-His	Transfer RNA	11,651	11,720	70 bp	+	–
tRNA-Ser (AGY)	Transfer RNA	11,721	11,786	66 bp	+	–
tRNA-Leu (CUN)	Transfer RNA	11,786	11,856	71 bp	+	–
ND5	Protein-coding gene	11,857	13,674	1,818 bp	+	46.4%
CYTB	Protein-coding gene	13,683	14,825	1,143 bp	+	47.4%
tRNA-Thr	Transfer RNA	14,829	14,897	69 bp	+	–
tRNA-Pro	Transfer RNA	14,922	14,991	70 bp	−	–
ND6	Protein-coding gene	14,998	15,516	519 bp	−	50.7%
tRNA-Glu	Transfer RNA	15,518	15,588	71 bp	−	–