234 



j. nopktnson eepokt on thenological 



Hertfordshire Naturalists' Calendar. 



No. 



82. 

 53. 

 70. 

 66. 

 74. 

 88. 

 89. 

 64. 



9. 

 37. 

 63. 



2. 

 69. 



36. 

 65. 

 22. 

 25. 

 80. 

 90. 

 61. 



1. 



4. 

 87. 

 97. 

 57. 

 12. 

 30. 

 76. 



7. 

 84. 

 92. 

 91. 

 6-J. 

 71. 



3. 

 16. 

 52. 

 75. 

 78. 

 60. 

 20. 

 51. 

 94. 

 93. 

 72. 

 10. 

 81. 



Species. 



Song Thrush [Turdus mtisims) sg 



Ivy-leaved Speedwell [Veronica hederifolia) fl 



Snowdrop (Galauthus nivalis) fl 



Hazel {('orylus Avellana) fl 



Honey Bee {Apis mellijicn) ap 



Skylark {Alauda arvensis) sg 



Chatfincli [Fringilla ccelehs) sg 



Wych Elm {Uhmis montana) fl 



Sweet Violet ( Viola odorata) fl 



Coltsfoot {Tussilar/o Farfara) fl 



Dog's Mercury [Mtrcurialis perennis) fl 



Pilewort [Ranuncubis Ficaria) fl 



Daff'odil [Narcissus Pseudo-narcissus) fl 



Whitlow-grass [Draba verna) fl 



Hairy Bittercress (Cardamine hirsuta) fl „ 



Willow Wren [Phijlloscoptis Trochilus) sg 



Butter-bur [Petasites vulgaris) fl 



Great Sallow [Salix caprea) fl 



Blackthorn [Prteinis spinosa) fl 



Barren Strawberry [Potentilla Fragariastrtmi) fl. 



Tawny Owl [Strix Aluco) hoots 



Rook [Corvus frugilegtis) builds 



Cowslip [Primula veris) fl 



AV^ood Anemone [Anemone nemorosa) fl 



Marsh Marigold [Caltha palustris) fl 



Chifi'-chaff' [Phylloscopus collyhita) sg 



Common Frog [Rana temporaria) spawns 



Ground Ivy [Nepeta Glechoma) fl 



Greater Stitchwort [Slellaria Uolostea) fl 



Wild Chervil [Anthriscus sylvestris) fl 



Small White Butterfly [Pieris Papa) ap 



Cuckoo Flower [Cardamine pratensis) fl 



Nightingale [Daulias Liiscinia) sg 



Swallow [Hirundo rustica) first seen 



Cuckoo [Cuculus canorus) first heard 



Ribwort [Plantago lanceolata) fl 



Blue-bell [Endymion nutans) fl 



Upright Crowfoot [Ranunculus acris) fl 



Herb Robert [Geraniutn Robertianum) fl 



Germander Speedwell ( Veronica Chamccdrys) fl. . 



Large White Butterfly [Pieris Brassicce) ap 



St. Mark's Fly [Bibio Marci) ap 



Creeping Bugle [Ajuga reptans) fl 



Bush Vetch ( Vicia sepiuui) fl 



Red Rattle [Pedicularis sylvatica) fl 



Turtle Dove [Columba Turtur) first seen 



Swift [Cypselus Apus) first seen 



Cock-chafer [Melolontha vulgaris) ap 



Milkwort [Polygala vulgaris) fl 



Flycatcher [Muscicapa grisola) first seen , 



