if it’s just a collection project, i don’t think people would notice that you’re adding their observations to your project, unless they join your project as members.
yup. once you have a list of taxa, you can filter easily on those lists. for example: https://www.inaturalist.org/observations?list_id=4347551 would get animal and fungi observations based on a list that contains Anamalia and Fungi.
…
in some cases, you can sort of make it searchable. for example, here are just the bird observations in your favorites (as of right now):
https://www.inaturalist.org/observations?taxon_id=3&verifiable=any&id=26717973,107282626,107283766,107167872,107083624,106731386,106701622,106223117,37218493,57006661,106084346,105929591,102558684,105876426,105860594,105860593,105526579,65999279,22119801,105446243,105446145,105122094,105001209,80691526,23910715,90418053,10185132,104779758,104155463,104689477,12722787,21651,86950758,7597654,3766441,104323472,104350760,104141883,104085566,73758967,549547,1540655,101443518,7000126,4865560,103827846,85872565,91455385,88564806,22156697,63930192,31914523,5094667,27933072,7173782,73819506,92119864,103139036,103340128,10142638,19961408,44062400,19783706,46687825,103230421,9626663,103083369,103072054,102146679,103067583,98542560,99308907,215340,91924563,35097847,68967630,102756193,14520337,1139082,102693913,102678257,101452326,601357,102448393,71099783,102396563,102213122,102389018,1719833,1719799,724118,4677510,39396617,15333669,9464981,99198360,24977545,8862493,22642810,101988106,69245238,40056917,10005532,97733449,86680668,100166611,19328270,102037722,40336954,590244,68933451,101447875,37065511,95827343,101801389,52211771,74361887,101594632,101508683,101506940,101179871,100727998,100663930,100664742,100127846,99934475,89839530,64964001,97901775,28139748,83668985,83748930,83231476,51979455,67696499,3780862,69848283,71818798,71898038,72239132,79238296,73866129,77713199,77932295,78135709,78000765,75855653,76638589,77714481,77630307,77207447,76775239,76776325,75703665,75349657,35007696,75005683,74906585,74545759,74707695,74580637,74396766,73906229,73822841,73705357,73705542,73705742,73392212,73180230,1253027,72691367,72553945,72665574,72506617,72426071,72424742,68769231,67986978,71780396,71855906,71841084,53441185,53517460,22994005,11504333,71106998,71039112,70990056,70926140,66034756,70648840,70535435,70509711,70509360,6567682,70114774,70125516,70072850,70076329,70017487,69973698,67255919,69964973,69840779,20048069,69701202,19164554,43961944,69185807,68216467,69188082,68785575,68609693,68609554,68585763,68466364,67490955,68244760,68248178,68248354,67468725,68017769,67949602,67897510,67507826,67502369,31088913,31088608,5260300,47367417,67037292,66947594,66849183,53769496,49343193,58744582,60453448,65844327,66117073,55109720,41150021,41149082,41106491,41091817,40944859,40936971,40927698,40884715,5032202,39871374,39481132,36572987,19747472,19747478,19747479,19747480,29820097,20797212,19559091,38594818,38594837,38484448,38411311,38381420,38312494,38250507,38182772,38172799,38172809,38110288,25031516,12806506,37764949,20195845,19177290,37670056,37620034,37597950,37392583,37548428,37157258,37150662,37048352,35916569,33284676,36636953,36487641,36387349,1839785,36246434,35987736,36146516,35941205,35843102,35833102,35398093,5773183,26308049,34232041,34106921,30117317,33876935,32508774,9374457,32726286,5890862,32432407,32359409,32365581,32318445,32091636,32138711,31650898,26390542,31038005,31029540,30579683,29798577,29754238,29757586,29739397,29669432,29671734,29718249,29685060,29534800,29476612,29384800,29329932,28658949,28543667,28341889,28039965,26733993,27614137,27601500,27482834,24484684,3505029,22537873,22537901,22351939,21817319,21470246,21438367,21198325,20991249,20964502,20936881,20814521,20763292,20515298,20378408,19838302,20168657,19930653,19922623,19710482,19682160,19291179,19265030,19216567,19154856,19109660,18871368,18743053,18729171,18668106,18560962,18339945,18234039,17608057,17397517,17248478,17219725,17231296,17053139,17049218,16679623,16676809,5832760,16343820,16320925,16060366,15305668,15991527,15962999,15351304,15351119,13528947,13496404,13212935,13130965,13003653,12798413,14350745,14060654,14002182,13687592,13622998,13598449,11607427,13497245,13478471,13472034,13198365,13136789,13001607,12788948,12731191,12697564,12503412,12468498,12406825,12310286,12146057,12021248,11965575,11952038,11844951,11451388,11409429,11420375,11281368,10892929,10723513,10600688,5443393,10482930,10303278,10175751,10096366,10046946,4315183,9333171,9989455,9971579,9970666,9916283,9809002,9395634,9806770,8289926,9806417,9759982,9736006,9749480,9747518,9747092,9654089
… that said, this approach definitely doesn’t make a distinction between: